WAEC SSCE - General Mathematics - 2012…

Question 1 Report

Solve the inequality: \(\frac{-m}{2} - \frac{5}{4} \geq \frac{5m}{12} - \frac{7}{6}\)

m \(\leq \frac{5}{4}\)

m \(\geq \frac{5}{4}\)

m \(\leq - \frac{1}{11}\) Correct answer

m \(\geq - \frac{1}{11}\)

Answer Details

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Linear Inequalities

Inequalities

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Question 2 Report

The diagram is a circle with centre P. PRST are points on the circle. Find the value of < PRS

144^o Correct answer

72^o

40^o

36^o

Answer Details

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Circles

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Question 3 Report

Simplify; \(\frac{3\sqrt{5} \times 4\sqrt{6}}{2 \sqrt{2} \times 3\sqrt{2}}\)

\(\sqrt{2}\)

\(\sqrt{5}\)

2\(\sqrt{2}\)

2\(\sqrt{5}\) Correct answer

Answer Details

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Number Bases

Sequence And Series

Surds (radicals)

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Question 4 Report

If x and y are variables and k is a constant, which of the following describes an inverse relationship between x and y?

y = kx

y = \(\frac{k}{x}\) Correct answer

y = k\(\sqrt{x}\)

y = x + k

Answer Details

The equation that describes an inverse relationship between x and y is y = k/x, which is the second option. An inverse relationship between two variables means that as one variable increases, the other variable decreases in a proportional manner. In other words, if we double the value of x, the value of y would be halved, and vice versa. In the equation y = k/x, as x increases, y decreases, and as x decreases, y increases. The constant k represents the scale of the relationship between x and y. The other options do not describe an inverse relationship between x and y. is a direct proportion where y increases as x increases. is a power relationship where y increases as the square root of x increases. is a linear relationship where y increases at a constant rate as x increases.

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Variation

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Question 5 Report

Convert 35₁₀ to number in base 2

1011

10011

100011 Correct answer

11001

Answer Details

To convert a number from base 10 to base 2 (binary), we need to divide the decimal number by 2 repeatedly until the quotient is zero. Then, we write the remainders in reverse order. Let's convert 35₁₀ to binary using this method: 35 / 2 = 17 remainder 1 17 / 2 = 8 remainder 1 8 / 2 = 4 remainder 0 4 / 2 = 2 remainder 0 2 / 2 = 1 remainder 0 1 / 2 = 0 remainder 1 The remainders, in reverse order, are 100011, which is the binary equivalent of 35₁₀. Therefore, the correct answer is option (C) 100011. Each digit in a binary number represents a power of 2, starting from the rightmost digit, which represents 2^0 = 1. The next digit represents 2^1 = 2, the next represents 2^2 = 4, and so on. To convert a binary number to decimal, we multiply each digit by its corresponding power of 2 and add up the results.

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Number Bases

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Question 6 Report

Simplify: \(\frac{54k^2 - 6}{3k + 1}\)

6(1 - 3k²)

6(3k² - 1)

6(3k - 1) Correct answer

6(1 - 3k)

Answer Details

To simplify the expression \(\frac{54k^2 - 6}{3k + 1}\), we can start by factoring out the numerator: \(\frac{54k^2 - 6}{3k + 1} = \frac{6(9k^2 - 1)}{3k + 1}\) We can further simplify the numerator by recognizing that \(9k^2 - 1\) is a difference of squares, and can be factored as \((3k + 1)(3k - 1)\): \(\frac{6(9k^2 - 1)}{3k + 1} = \frac{6(3k + 1)(3k - 1)}{3k + 1}\) We can then cancel out the common factor of \(3k + 1\) in the numerator and denominator, which gives: \(\frac{6(3k - 1)}{1} = 6(3k - 1)\) Therefore, the simplified expression is \(6(3k - 1)\). The correct option is: - 6(3k - 1)

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Algebraic Expressions

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Question 7 Report

The sum of the interior angles of regular polygon is 1800^o. How many sides has the polygon?

12 Correct answer

Answer Details

The sum of the interior angles of a polygon can be found by the formula: sum of interior angles = (n-2) x 180 degrees where n is the number of sides in the polygon. In this problem, we are given that the sum of the interior angles of the polygon is 1800 degrees. So we can set up an equation: 1800 = (n-2) x 180 Simplifying the equation: 10 = n - 2 n = 12 Therefore, the polygon has 12 sides.

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Triangles And Polygons

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Question 8 Report

Make p the subject of the relation: q = \(\frac{3p}{r} + \frac{s}{2}\)

p = \(\frac{2q - rs}{6}\)

p = 2qr - sr - 3

p = \(\frac{2qr - s}{6}\)

p = \(\frac{2qr - rs}{6}\) Correct answer

Answer Details

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Change Of Subject Of A Formula/Relation

Solution Of Linear Equations

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Question 9 Report

If x + 0.4y = 3 and y = \(\frac{1}{2}\)x, find the value of (x + y)

1\(\frac{1}{4}\)

2\(\frac{1}{2}\)

3\(\frac{3}{4}\) Correct answer

Answer Details

We are given that x + 0.4y = 3 and y = \(\frac{1}{2}\)x. Substitute y in the first equation: x + 0.4 * (\(\frac{1}{2}\)x) = 3 x + 0.2x = 3 1.2x = 3 x = 2.5 Substitute x in the equation for y: y = \(\frac{1}{2}\) * 2.5 = 1.25 Then, x + y = 2.5 + 1.25 = 3.75. Therefore, the value of (x + y) is 3\(\frac{3}{4}\). Hence, the correct option is (c) 3\(\frac{3}{4}\).

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Solution Of Linear Equations

Circles

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Question 10 Report

A side and a diagonal of a rhombus are 10cm and 12cm respectively, Find its area

20cm²

24cm²

48cm²

96cm² Correct answer

Answer Details

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Question 11 Report

In the diagram, |QR| = 10m, |SR| = 8m

< QPS = 30^o, < QRP = 90^o and |PS| = x, Find x

1.32m

6.32m

9.32m Correct answer

17.32

Answer Details

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Circles

Angles Of Elevation And Depression

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Question 12 Report

A kite flies on a taut string of length 50m inclined at tan angle 54^o to the horizontal ground. The height of the kite above the ground is

50 tan 30^o

50 sin 54^o Correct answer

50 tan 54^o

50 sin 36^o

Answer Details

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Sine, Cosine And Tangent Of An Angle

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Question 13 Report

Given that the mean of the scores 15, 21, 17, 26, 18 and 29 is 21, calculate the standard deviation of the scores

\(\sqrt{10}\)

5 Correct answer

\(\sqrt{30}\)

Answer Details

To calculate the standard deviation of the scores, we first need to find the variance, which is the average of the squared deviations from the mean. 1. Find the mean of the scores: Mean = (15 + 21 + 17 + 26 + 18 + 29)/6 = 126/6 = 21 2. Calculate the deviations from the mean for each score: 15 - 21 = -6 21 - 21 = 0 17 - 21 = -4 26 - 21 = 5 18 - 21 = -3 29 - 21 = 8 3. Square each deviation: (-6)^2 = 36 0^2 = 0 (-4)^2 = 16 5^2 = 25 (-3)^2 = 9 8^2 = 64 4. Find the average of the squared deviations: (36 + 0 + 16 + 25 + 9 + 64)/6 = 150/6 = 25 5. Take the square root of the variance to get the standard deviation: Standard deviation = sqrt(25) = 5 Therefore, the standard deviation of the scores is 5. The answer is 5.

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Measures Of Dispersion

Statistics

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Question 14 Report

In the diagram, O is a circle centre of the circle PQRS and < PSR = 86^o. If < PQR = x^o, find x

108^o

172^o Correct answer

130^o

50^o

Answer Details

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Circles

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Question 15 Report

A bag contains 4 red and 6 black balls of the same size. If the balls are shuffled briskly and two balls are drawn one after the other without replacement, find the probability of picking balls of different colours

\(\frac{8}{15}\) Correct answer

\(\frac{13}{25}\)

\(\frac{11}{15}\)

\(\frac{13}{15}\)

Answer Details

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Question 16 Report

In 1995, the enrollment of two schools X and Y were 1,050 and 1,190 respectively. Find the ration of the enrollments of X and Y

50:11

15:17 Correct answer

13:55

12:11

Answer Details

To find the ratio of enrollments of schools X and Y, we need to divide the enrollment of school X by the enrollment of school Y. Ratio of enrollments of X and Y = Enrollment of X / Enrollment of Y Enrollment of X = 1,050 Enrollment of Y = 1,190 Ratio of enrollments of X and Y = 1,050 / 1,190 Simplifying this fraction by dividing both numerator and denominator by 10 gives: Ratio of enrollments of X and Y = 105 / 119 Further simplifying by dividing both numerator and denominator by 7 gives: Ratio of enrollments of X and Y = 15 / 17 Therefore, the ratio of the enrollments of X and Y is 15:17. Answer option (B) is correct.

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Sine, Cosine And Tangent Of An Angle

Ratio, Proportions And Rates

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Question 17 Report

In the diagram, MN//PO, < PMN = 112^o, < PNO = 129^oo and < MPN = y^o. Find the value of y

51^o

54^o Correct answer

56^o

68^o

Answer Details

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Angles And Intercepts On Parallel Lines

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Question 18 Report

Is the diagram, MN, PQ and RS are three intersecting straight lines. Which of the following statements is/are true? i. t = y ii. x + y + z + m = 180^o ii. x + m + n = 180^o iv. x + n = m + z

i and iv

iii Correct answer

Answer Details

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Circles

Triangles And Polygons

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Question 19 Report

The sum of 12 and one third of n is 1 more than twice n. Express the statement in the form of an equation

12n - 6 = 0

3n - 12 = 0

2n - 35 = 0

5n - 33 = 0 Correct answer

Answer Details

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Solution Of Linear Equations

Quadratic Equations

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Question 20 Report

The n^th term of a sequence is T_n = 5 + (n - 1)². Evaluate T₄ - T₆

-16 Correct answer

-30

Answer Details

To evaluate T₄ - T₆, we first need to find the values of T₄ and T₆. T₄ = 5 + (4 - 1)² = 5 + 9 = 14 T₆ = 5 + (6 - 1)² = 5 + 25 = 30 Therefore, T₄ - T₆ = 14 - 30 = -16 Hence, the answer is -16.

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Sequence And Series

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Question 21 Report

Factorise completely: 32x²y - 48x³y³

16x²y(2 - 3xy²) Correct answer

8xy(4x - 6x²y²)

8x²y(4 - 6xy²)

16xy(2x - 3x²y²)

Answer Details

We can begin by factoring out the greatest common factor of the two terms, which is 16x²y. This gives: 32x²y - 48x³y³ = 16x²y(2 - 3xy²) So the correct option is 16x²y(2 - 3xy²).

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Algebraic Expressions

Angles And Intercepts On Parallel Lines

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Question 22 Report

Which of these statements about y = 8\(\sqrt{m}\) is correct?

log y = log 8 x log \(\sqrt{m}\)

log y = 3 log 2 x \(\frac{1}{2}\) log m

log y = 3 log 2 - \(\frac{1}{2}\) log m

log y = 3 log 2 + \(\frac{1}{2}\) log m Correct answer

Answer Details

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Angles Of Elevation And Depression

Surds (radicals)

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Question 23 Report

The curved surface area of a cylindrical tin is 704cm². If the radius of its base is 8cm, find the height. [Take \(\pi = \frac{22}{7}\)]`

14cm Correct answer

9cm

8cm

7cm

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Mensuration

Areas

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Question 24 Report

The volume of a cuboid is 54cm3. If the length, width and height of the cuboid are in the ratio 2:1:1 respectively, find its total surface area

108cm²

90cm² Correct answer

80cm²

72cm²

Answer Details

To solve this problem, we first need to find the dimensions of the cuboid. Let the length, width and height be 2x, x and x respectively. Then we have: Volume of cuboid = length x width x height 54 = 2x * x * x 54 = 2x^3 x^3 = 27 x = 3 Therefore, the length of the cuboid is 2x = 6cm, the width is x = 3cm, and the height is x = 3cm. To find the total surface area, we need to find the area of each face and add them up. The total surface area is given by: Total surface area = 2lw + 2lh + 2wh = 2(6*3) + 2(6*3) + 2(3*3) = 36 + 36 + 18 = 90 cm^2 Therefore, the total surface area of the cuboid is 90cm^2. The correct answer is option B.

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Question 25 Report

Solve for x in the equation; \(\frac{1}{x} + \frac{2}{3x} = \frac{1}{3}\)

5 Correct answer

Answer Details

To solve the equation \(\frac{1}{x} + \frac{2}{3x} = \frac{1}{3}\), we can use the following steps: Step 1: Find the common denominator. The denominators in this equation are x and 3x. The common denominator is 3x. Step 2: Multiply both sides of the equation by the common denominator. Multiplying both sides by 3x gives: 3 + 2 = x Step 3: Simplify and solve for x. Simplifying the left side gives: 5 = x Therefore, the solution to the equation is x = 5. x = 5, is the correct answer. Options 2, 3, and 4 are incorrect because they do not equal 5.

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Solution Of Linear Equations

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Question 26 Report

Express 302.10495 correct to five significant figures

302.10 Correct answer

302.11

302.105

302.1049

Answer Details

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Fractions, Decimals And Approximations

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Question 27 Report

Mr. Manu travelled from Accra to Pamfokromb a distance of 720km in 8 hours. What will be his speed in m/s?

25m/s Correct answer

150m/s

250m/s

500m/s

Answer Details

To find the speed in meters per second (m/s), we need to convert the distance and time to meters and seconds respectively. Distance is given as 720km. 1km is equal to 1000m, so 720km = 720 x 1000m = 720,000m. Time taken is given as 8 hours. 1 hour is equal to 3600 seconds, so 8 hours = 8 x 3600 seconds = 28,800 seconds. Speed = Distance ÷ Time = 720,000m ÷ 28,800s = 25m/s. Therefore, Mr. Manu's speed is 25m/s. (25m/s) is the correct answer.

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Representation Of Data

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Question 28 Report

If p = {prime factors of 210} and Q = {prime less than 10}, find p \(\cap\) Q

{1,2, 3}

{2, 3, 5}

{1, 3, 5,7}

{2,3,5,7} Correct answer

Answer Details

The prime factors of 210 are 2, 3, 5, and 7. The prime numbers less than 10 are 2, 3, 5, and 7. The intersection (p ∩ Q) is the set of elements that are in both p and Q. Therefore, p ∩ Q is {2, 3, 5, 7}. So, the correct option is: - {2,3,5,7}

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Number Bases

Sets

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Question 29 Report

The diagram is a polygon. Find the largest of its interior angles

300^o

100^o

120^o

150^o Correct answer

Answer Details

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Angles And Intercepts On Parallel Lines

Angles

Triangles And Polygons

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Question 30 Report

The lengths of the minor and major arcs 54cm and 126cm respectively. Calculate the angle of the major sector

360^o

252^o Correct answer

246^o

234^o

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Circles

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Question 31 Report

In the diagram, |SR| = |QR|. < SRP = 65^o and < RPQ = 48^o, find < PRQ

65^o

45^o

25^o

19^o Correct answer

Answer Details

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Circles

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Question 32 Report

If N2,500.00 amounted to N3,50.00 in 4 years at simple interest, find the rate at which the interest was charged

7\(\frac{1}{2}\)%

10% Correct answer

Answer Details

Simple interest is calculated by multiplying the principal amount, the interest rate, and the time in years. The formula for simple interest is given as: Simple Interest = (Principal x Rate x Time) / 100 In this problem, we know that the principal amount (P) is N2,500.00, the amount (A) after 4 years is N3,500.00. We need to find the rate (R) at which the interest was charged. Using the formula for simple interest, we can write: A = P + I where I is the interest amount. We can rearrange the formula to solve for I: I = A - P = N3,500.00 - N2,500.00 = N1,000.00 Now, we can substitute the values we know into the formula for simple interest and solve for R: I = (P x R x T) / 100 N1,000.00 = (N2,500.00 x R x 4) / 100 Simplifying, we get: R = (N1,000.00 x 100) / (N2,500.00 x 4) = 10% Therefore, the rate at which the interest was charged is 10%.

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Fractions, Decimals And Approximations

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Question 33 Report

Find the coefficient of m in the expression of (\(\frac{m}{2} - 1 \frac{1}{2}\)) (m + \(\frac{2}{3}\))

-\(\frac{1}{6}\)

- \(\frac{1}{2}\)

-1

-1\(\frac{1}{6}\) Correct answer

Answer Details

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Algebraic Expressions

Algebraic Fractions

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Question 34 Report

The graph is that of y = 2x² - 5x - 3. For what value of x will y be negative? What is the gradient of y = 2x² - 5x - 3 at the point x = 4?

11.1 Correct answer

10.5

10.3

9.9

Answer Details

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Differentiation

Coordinate Geometry

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Question 35 Report

Express 3 - [\(\frac{x - y}{y}\)] as a single fraction

\(\frac{3xy}{y}\)

\(\frac{x - 4y}{y}\)

\(\frac{4y - x}{y}\) Correct answer

3 - \(\frac{x - y}{y}\)

Answer Details

To express 3 - [\(\frac{x - y}{y}\)] as a single fraction, we first need to simplify the expression inside the square brackets: 3 - [\(\frac{x - y}{y}\)] = 3 - (\(\frac{x}{y}\) - \(\frac{y}{y}\)) = 3 - \(\frac{x}{y}\) + 1 = 4 - \(\frac{x}{y}\) Therefore, 3 - [\(\frac{x - y}{y}\)] can be expressed as a single fraction: = 4 - \(\frac{x}{y}\) = \(\frac{4y - x}{y}\) Hence, the answer is \(\frac{4y - x}{y}\).

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Algebraic Fractions

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Question 36 Report

The diagram is a circle centre O. If < SPR = 2m and < SQR = n, express m in terms of n

m = \(\frac{n}{2}\) Correct answer

m = 2n

m = n - 2

m = n + 2

Answer Details

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Question 37 Report

The bar chart shows the frequency distribution of marks scored by students in a class test. What is the median of the distribution?

2 Correct answer

Answer Details

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Representation Of Data

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Question 38 Report

In the diagram, MQ//RS, < TUV = 70^o and < RLV = 30^o. Find the value of x

150^o

110^o

100^o Correct answer

95^o

Answer Details

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Triangles And Polygons

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Question 39 Report

If x + y = 2y - x + 1 = 5, find the value of x

2 Correct answer

-1

Answer Details

We are given two equations, x + y = 5 and 2y - x + 1 = 5, and we need to find the value of x. From the first equation, we can rearrange it to get x = 5 - y. Substituting this value of x into the second equation, we get: 2y - (5 - y) + 1 = 5 Simplifying the equation, we get: 3y - 4 = 5 Adding 4 to both sides, we get: 3y = 9 Dividing both sides by 3, we get: y = 3 Substituting this value of y into x + y = 5, we get: x + 3 = 5 Subtracting 3 from both sides, we get: x = 2 Therefore, the value of x is 2.

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Solution Of Linear Equations

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Question 40 Report

Alfred spent \(\frac{1}{4}\) of his money on food, \(\frac{1}{3}\) on clothing and save the rest. If he saved N72,20.00, how much did he spend on food?

N43,200.00 Correct answer

N43,000.00

N42,200.00

N40,000.00

Answer Details

Let A be the total amount of money that Alfred has. From the given information, he spent \(\frac{1}{4}\) of A on food and \(\frac{1}{3}\) of A on clothing, and he saved the rest. Therefore, we have: Amount spent on food = \(\frac{1}{4}\)A Amount spent on clothing = \(\frac{1}{3}\)A Amount saved = A - (\(\frac{1}{4}\)A + \(\frac{1}{3}\)A) Amount saved = A - \(\frac{7}{12}\)A Amount saved = \(\frac{5}{12}\)A We know that Alfred saved N72,20.00, so we can write: \(\frac{5}{12}\)A = N72,20.00 Multiplying both sides by \(\frac{12}{5}\), we get: A = N172,80.00 Therefore, the amount spent on food is: \(\frac{1}{4}\)A = \(\frac{1}{4}\) x N172,80.00 = N43,20.00 Hence, Alfred spent N43,20.00 on food. Answer is correct.

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Fractions, Decimals And Approximations

Number Bases

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Question 41 Report

Solve (\(\frac{27}{125}\))^{-\(\frac{1}{3}\)} x (\(\frac{4}{9}\))^{\(\frac{1}{2}\)}

\(\frac{10}{9}\) Correct answer

\(\frac{9}{10}\)

\(\frac{2}{5}\)

\(\frac{12}{125}\)

Answer Details

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Number Bases

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Question 42 Report

The bar chart shows the frequency distribution of marks scored by students in a class test. How many students are in the class?

25 Correct answer

Answer Details

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Question 43 Report

The position of three ships P,Q and R at sea are illustrated in the diagram. The arrows indicated the North direction. The bearing of Q from P is 050^o and < PQR = 72^o. Calculate the bearing of R and Q

155^o

80^o

158^o Correct answer

91^o

Answer Details

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Bearings

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Question 44 Report

The bar chart shows the frequency distribution of marks scored by students in a class test. Calculate the mean of the distribution.

6.0

3.0

2.4 Correct answer

1.8

Answer Details

To calculate the mean of a frequency distribution, we need to find the sum of all the values multiplied by their respective frequencies and divide by the total number of values. Looking at the bar chart, we can see that there are 5 values: 1, 2, 3, 4, and 5. The corresponding frequencies are 1, 2, 5, 6, and 1, respectively. To calculate the mean, we first need to calculate the sum of all the values multiplied by their respective frequencies: (1 x 1) + (2 x 2) + (3 x 5) + (4 x 6) + (5 x 1) = 1 + 4 + 15 + 24 + 5 = 49 Next, we need to calculate the total number of values, which is the sum of all the frequencies: 1 + 2 + 5 + 6 + 1 = 15 Finally, we divide the sum of the values multiplied by their frequencies by the total number of values: 49 / 15 = 3.27 (rounded to two decimal places) Therefore, the mean of the distribution is approximately 3.27. The correct answer is not provided in the options, but the closest one is option (C) 2.4.

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Representation Of Data

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Question 45 Report

The diagram is a circle of radius |QR| = 4cm. \(\bar{R}\) is a tangent to the circle at R. If TPO = 120^o, find |PQ|.

2.32cm

1.84cm

0.62cm Correct answer

0.26cm

Answer Details

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Question 46 Report

In \(\bigtriangleup\) XYZ, /XY/ = 8cm, /YZ/ = 10cm and /XZ/ = 6cm. Which of these relation is true?

/XY/ + /YZ/ = /XZ/

/XY/ - /YZ/ = /XZ/

/XY/² = /Y/² - /XY/²

/YZ/² = /XZ/² + /XY/² Correct answer

Answer Details

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Triangles And Polygons

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Question 47 Report

If x and y are variables and k is a constant, which of the following describes an inverse relationship between x and y?

y = kx

y = \(\frac{k}{x}\) Correct answer

y = k\(\sqrt{x}\)

y = x + k

Answer Details

An inverse relationship between two variables means that as one variable increases, the other variable decreases. Mathematically, an inverse relationship can be represented by an equation where one variable is multiplied or divided by a constant. Out of the given equations, the equation that represents an inverse relationship between x and y is y = \(\frac{k}{x}\). To see why this is the case, let's consider what happens to y as x increases. Suppose x doubles in value. Then, according to the equation y = \(\frac{k}{x}\), y will be halved in value. Similarly, if x triples in value, y will be divided by 3. This means that as x increases, y decreases, which is the characteristic of an inverse relationship. On the other hand, in the equation y = kx, as x increases, y also increases. This is not an inverse relationship but a direct relationship. The same applies to y = k\(\sqrt{x}\) and y = x + k. Therefore, the equation that describes an inverse relationship between x and y is y = \(\frac{k}{x}\).

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Variation

Inequalities

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Question 48 Report

If cos(x + 40)^o = 0.0872, what is the value of x?

85^o

75^o

65^o

45^o Correct answer

Answer Details

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Read lesson note on Introductory Calculus (WAEC)

Sine, Cosine And Tangent Of An Angle

Introductory Calculus

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Question 49 Report

The graph is that of y = 2x² - 5x - 3. For what value of x will y be negative? For what value of x will y be negative?

-\(\frac{1}{2} \leq x\) < 3

-\(\frac{1}{2} < x \leq 3\)

-\(\frac{1}{2} < x < 3\) Correct answer

-\(\frac{1}{2} \leq x \leq 3\)

Answer Details

To find when y is negative, we need to find the values of x for which 2x^2 - 5x - 3 is negative. One way to do this is to use the quadratic formula: x = (-b ± sqrt(b^2 - 4ac)) / 2a where a = 2, b = -5, and c = -3. Plugging these values in, we get: x = (-(-5) ± sqrt((-5)^2 - 4(2)(-3))) / 2(2) x = (5 ± sqrt(49)) / 4 x = (5 ± 7) / 4 So the solutions are x = -3/2 and x = 2. We can check that when x < -3/2 or x > 2, y is positive, and when -3/2 < x < 2, y is negative. Therefore, the answer is option (C) -\(\frac{1}{2} < x < 3\).

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WAEC SSCE - General Mathematics - 2012 (Objective)