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Exponential Growth and Decay (7-7 Practice)

Authored by Natalie Rube

Mathematics

8th - 9th Grade

CCSS covered

Used 12+ times

Exponential Growth and Decay (7-7 Practice)
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20 questions

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1.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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A population of 1500 deer decreases by 1.5% per year. What will be the deer population after 11 years? Round to the nearest deer.

Tags

CCSS.HSF-LE.A.1C

2.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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An antibiotic is introduced into a colony of 15,000 bacteria during a laboratory experiment. The colony begins to decrease at 13.7% every minute. How many bacteria will remain after 15 minutes? Round to the nearest bacteria.

Tags

CCSS.HSF-LE.A.1C

3.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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Aaron invests $10,000 in a savings account earning 4.5% annual interest compounded quarterly. What is the value of his investment after 5 years? Round to the nearest cent. 

Use the formula

 A(t) = P(1+rn)ntA\left(t\right)\ =\ P\left(1+\frac{r}{n}\right)^{nt}  

4.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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A $149,585 Corvette averages a 6.6% depreciation rate per year. What will be the resale value of the sports car in 7 years? Round to the nearest cent.

Tags

CCSS.HSF.BF.A.2

5.

FILL IN THE BLANK QUESTION

3 mins • 1 pt

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The attendance for a basketball team declined at a rate of 5% per game throughout a losing season. There were 23,500 people at the first game. How many people will there be by game 15? Round to the nearest person.

Tags

CCSS.HSF.BF.A.2

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The function given is an example of growth or decay?

 y=3(12)xy=3\cdot\left(\frac{1}{2}\right)^x  

Growth

Decay

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Is the following function an example of decay or growth?

f(x)=2(0.85)x

Exponential Decay

Exponential Growth

Tags

CCSS.HSF-IF.C.8B

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