Marks 2 3 4 5 6 7 8 No of students 5 7 9 6 3 6 4 The table above shows the distribution of marks by some candidates in a test. What is the median score?

The sum of the first n terms of a linear sequence is \(S_{n} = n^{2} + 2n\). Determine the general term of the sequence.

If \(2\log_{4} 2 = x + 1\), find the value of x.

Find the range of values of x for which \(2x^{2} + 7x - 15 > 0\).

If \(f(x) = 2x^{2} - 3x - 1\), find the value of x for which f(x) is minimum.

The sum of the first n terms of a linear sequence is \(S_{n} = n^{2} + 2n\). Find the common difference of the sequence.

Simplify \(\frac{\sqrt{3} + \sqrt{48}}{\sqrt{6}}\)

The polynomial \(2x^{3} + x^{2} - 3x + p\) has a remainder of 20 when divided by (x - 2). Find the value of constant p.

A function f is defined on R, the set of real numbers, by: \(f : x \to \frac{x + 3}{x - 2}, x \neq 2\), find \(f^{-1}\).