Exponentials with Change of Rate

Exponentials with Change of Rate

9th Grade

12 Qs

quiz-placeholder

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Exponentials with Change of Rate

Exponentials with Change of Rate

Assessment

Quiz

Mathematics

9th Grade

Hard

CCSS
HSF-IF.C.8B, HSF.LE.B.5, HSF-LE.A.1C

Standards-aligned

Created by

Barbara White

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The function f(x) = 12,500(0.89)x models the value of a car x years after its purchase. Which statement is true about the value of the car?

The value is decreasing at a rate of 11% per year.

The value is decreasing at a rate of 89% per year.

The value is increasing at a rate of 11% per year.

The value is increasing at a rate of 89% per year.

Tags

CCSS.HSF.LE.B.5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Genevieve deposited $400 into her bank account. The equation A(t) = 400(1.07)x can be used to calculate the value of her money after t years. What is the annual interest rate she is earning on her deposit?

0.07%

1.07%

7%

10%

Tags

CCSS.HSF-LE.A.1C

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The function V(x) = 20,000(0.87)x models the value of a car x years after its purchase. Which best describes the rate of change in the value of the car?

Exponential growth of 87% each year

Exponential growth of 13% each year

Exponential decay of 87% each year

Exponential decay of 13% each year

Tags

CCSS.HSF.LE.B.5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The function f(x) = 250(1.12)x models the number of students at a school x years after it opened. By what rate is the number of students increasing each year?

0.12%

0.88%

12%

88%

Tags

CCSS.HSF.LE.B.5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The function f(x) = 24500(0.84)x models the population of a town t years after 2008. What rate is the population of the town decreasing each year?

24.5%

75.5%

16%

84%

Tags

CCSS.HSF-IF.C.8B

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

y = 123(1.023)x

Describe the growth/decay rate.

Decay by 2.3%

Growth by 2.3%

Decay by 97.7%

Growth by 97.7%

Tags

CCSS.HSF-IF.C.8B

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

y = 100(0.83)x

Describe the growth/decay rate.

Decay by 8.3%

Growth by 8.3%

Decay by 17%

Growth by 17%

Tags

CCSS.HSF-IF.C.8B

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