Exponential Growth and Decay

Exponential Growth and Decay

9th Grade

12 Qs

quiz-placeholder

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Exponential Growth and Decay

Exponential Growth and Decay

Assessment

Quiz

Mathematics

9th Grade

Easy

CCSS
HSF.LE.A.2, HSF-IF.C.7E, 7.RP.A.3

+3

Standards-aligned

Created by

Cathy Sue Mcdaniel

Used 4+ times

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12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A population of 1500 deer decreases by 1.5% per year. At the end of 10 years, there will be approximately 1290 deer in the population. Which function can be used to determine the number of deer, y, in this population at the end of t years?

y = 1500(1 - 0.015)t
y = 1500(0.015)t
y = 1500(1 + 0.015)t
y = 1500(1.5)t

Tags

CCSS.HSF.LE.A.2

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

An antibiotic is introduced into a colony of 12,000 bacteria during a laboratory experiment. The colony is decreasing by 14.9% per minute. Which function can be used to model the number of bacteria in the colony after x minutes?

f(x) = 12000(1 + 14.9)x
f(x) = 12000(1 - 14.9)x
f(x) = 12000(1 + 0.149)x
f(x) = 12000(1 - 0.149)x

Tags

CCSS.HSF.LE.A.2

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is a, the starting term, for the function: f(x) = 300(1.16)x?

300
1.16
.16
x

Tags

CCSS.HSF.LE.B.5

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

Is the pictured graph growth, decay, or linear or none?  

Exponential Growth
Exponential Decay
Linear
None

Tags

CCSS.HSF-IF.C.7E

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Is this exponential growth or decay?

Growth
Decay

Tags

CCSS.HSF-IF.C.7E

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Write an equation that models the following situation:

Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

y=6(0.14)x

y=6(1+14)x

y=6(1+ 0.14)x

y=6(1 - 0.14)x

Tags

CCSS.HSF.LE.A.2

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

y=5000(1 - 0.30)x

y=30(5000)x

y=5000(1 + 0.30)x

y=5000xx

Tags

CCSS.HSF.LE.A.2

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