Modeling Decreasing Exponential Functions

Modeling Decreasing Exponential Functions

9th Grade

20 Qs

quiz-placeholder

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Modeling Decreasing Exponential Functions

Modeling Decreasing Exponential Functions

Assessment

Quiz

Mathematics

9th Grade

Hard

CCSS
HSF.LE.A.2, HSF-IF.C.8B, HSF-LE.A.1C

+2

Standards-aligned

Created by

Anthony Clark

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A car was purchased for $25,000. Research shows that the car has an average yearly depreciation rate of 18.5%. Create a function that will determine the value, V(t), of the car t years after purchase.

V(t) = 25000(1 - 0.185)t

V(t) = 25000(1 + 0.185)t

V(t) = 25000(1 - 18.5)t

V(t) = 25000(1 + 18.5)t

Tags

CCSS.HSF.LE.A.2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The rabbit population started at 65,000 rabbits. The population is decreasing at a rate of 1.5% each year. Write a function r(t) to represent the rabbit population after t years.

r(t) = 65000(1 - 0.015)t

r(t) = 65000(1 + 0.015)t

r(t) = 65000(1 - 1.5)t

r(t) = 65000(1 + 1.5)t

Tags

CCSS.HSF.LE.A.2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The bear population in a given area is currently 1580. They anticipate the bear population to decrease by 2% each year. Which function represents the population of bears, B, after t years.

B = 1580(0.02)

B = 1580(1 – 0.02)

B = 1580(1 + 0.02)

B = 1580(1 – 0.2)

Tags

CCSS.HSF.LE.A.2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

is it a growth factor or a decay factor?

Growth Factor

Decay Factor

Tags

CCSS.HSF-LE.A.1A

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Suppose a culture of bacteria begins with 500 cells and dies by 30% each year. Write an equation that represents this situation.

y = 500(0.7)ⁿ

y = 500(1.3)ⁿ

y = 500(1.7)ⁿ

y = 500(1.13)ⁿ

Tags

CCSS.HSF.LE.A.2

6.

MULTIPLE CHOICE QUESTION

1 min • 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(0.7)x

y=30(5000)x

y=5000(1.3)x

y=5000xx

Tags

CCSS.HSF.LE.A.2

7.

MULTIPLE CHOICE QUESTION

1 min • 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(0.7)x

y=5000(1.3)x

y=30(5000)x

y=5000xx

Tags

CCSS.HSF.LE.A.2

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