Exponential Growth And Decay
Gbogbo ọrọ náà
When a quantity grows or shrinks by the same percentage again and again, it changes exponentially: slowly at first, then dramatically. Savings with compound interest, a growing population and a depreciating car all follow this pattern, and the same compact formula describes them all.
In this lesson (Extended tier) you will model exponential growth and decay using a repeated percentage change, and use the formula to find a value after a number of steps.
Ebumnobi
- Use exponential growth and decay.
Nkuzi Olu
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Maapụ uche
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Akwụkwọ Ọmụmụ
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Exponential Growth And Decay. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- A population of 5000 grows by 8% per year. Which expression gives the population after 3 years? A. 5000 x 3 x 1.08 B. 5000 x 1.08^3 C. 5000 x 0.08^3 D. 5000 + 1.08^3 Answer: B
- A car worth $12 000 loses 15% of its value each year. What multiplier is used? A. 0.15 B. 0.85 C. 1.15 D. 1.85 Answer: B
- $2000 grows at 5% per year compound. Its value after 2 years is: A. $2100 B. $2200 C. $2205 D. $2210 Answer: C
- A quantity decays by 10% per step. After 2 steps a value of 100 becomes: A. 80 B. 81 C. 90 D. 100 Answer: B
- Exponential growth means a quantity changes by: A. the same amount each step B. the same percentage each step C. a decreasing amount D. a random amount Answer: B
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Rue ajuju ndi a n'ime ngwa ahu
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Akụkụ akwụkwọ
Exponential and Logarithmic Models
Model exponential growth and decay.
"Algebra and Trigonometry: Exponential and Logarithmic Models" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/algebra-and-trigonometry/pages/6-7-exponential-and-logarithmic-models. Access for free at https://openstax.org/books/algebra-and-trigonometry/pages/1-introduction
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Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Exponential Growth And Decay? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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