Growth / Decay Functions

Growth / Decay Functions

9th Grade

26 Qs

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Growth / Decay Functions

Growth / Decay Functions

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

CCSS
HSF-IF.C.7E, HSF-IF.C.8B, HSF.LE.B.5

+2

Standards-aligned

Created by

Barbara White

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26 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

In the equation y = a(b)x, what does a represent?

Amount you multiply by

Starting (initial) amount

Exponential function

Slope

Tags

CCSS.HSF.LE.B.5

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The function f (x) = 500(1.035)x models the amount of money in a certificate of deposit after x years. How much money will there be in 6 years?

$1.23

$517.50

$483.10

$614.63

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The function f (x) = 200,000(0.98)x, where x is the time in years, models the population of a city. What will the population be in 7 years?

173,625 people

300,000 people

416,423 people

830,509 people

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which set of ordered pairs satisfies an exponential function?

{(–1, –64), (0, 0), (1, 64), (2, 128)}

{(0, 4), (1, 12), (2, 36), (3, 108)}

{(–1, 1), (0, 0), (1, 1), (2, 4)}

{(–1, 1), (0, 0), (1, 1), (2, 4)}

Tags

CCSS.HSF-LE.A.1A

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Identify the initial value:

y = 6.87(4)x

4

6.87

3

1

Tags

CCSS.HSF.LE.B.5

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The function y = 125(1.13)x represents Mr. Gantz's recent investments where x is measured in years. Which is not true?

Mr. Gantz initially invested $125

After 4 years, Mr. Gantz will have about $203.81

Mr. Gantz earns more money in year 1 than in year 5

Tags

CCSS.HSF.LE.B.5

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Identify the y-intercept (initial value) in the function

f (x) = 13(0.27)x

(0.27)x

0.27

13

3.51

Tags

CCSS.HSF-IF.C.7E

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