Exponential Percent Growth/Decay

Exponential Percent Growth/Decay

9th Grade

13 Qs

quiz-placeholder

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Exponential Percent Growth/Decay

Exponential Percent Growth/Decay

Assessment

Quiz

Mathematics

9th Grade

Medium

CCSS
HSF.LE.A.2, HSF.LE.B.5, HSF-LE.A.1C

+5

Standards-aligned

Created by

Gabrielle Wasserzug

Used 62+ times

FREE Resource

13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

There were 417 cell phones sold at an electronics store in January. Since then, cell phone sales at this store have increased at a rate of 3.75% per month. At this rate of growth, which function can be used to determine the monthly cell phone sales x months after January?
f(x) = 417(3.75)x
f(x) = 417(0.0375)x
f(x) = 417(1.0375)x
f(x) = 417(1.375)x

Tags

CCSS.HSF.LE.A.2

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Some banks charge a fee for a savings account that is left inactive for an extended period of time. The equation y = 5000(0.98)x represents the amount remaining, y, of one account that was left inactive for a period of x years. What does the number 5000 represent in this situation?
A fee charged for an inactive account
The percent of money in the account after x years
The amount of money in the account initially
The amount of money in the account after x years

Tags

CCSS.HSF.LE.B.5

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A child asks her dad for an allowance that starts with a penny and then doubles every day for a month. Which function can be used to model the amount of money, A, the child will receive each day, x?
A(x) = 2(0.01)x
A(x) = 0.01(2)x
A(x) = 0.01(1 - 2)x
A(x) = 2(1.01)x

Tags

CCSS.HSF.LE.A.2

4.

MULTIPLE CHOICE QUESTION

5 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(1.14)x
y=6(0.86)x

Tags

CCSS.HSF.LE.A.2

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)t where t is the number of years since 1990. What was the population in 1990?

0 people

1.04 people

6191 people

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)t where t is the number of years since 1990. What percent did the population increase each year?

4%

104%

96%

1.04%

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

An adult takes 400 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by about 29%.

What is the multiplier (the b-value) for this problem?

1.29

.71

.29

1.71

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