
Exponential Growth Decay Word Problem
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered

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19 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The population of a school is 800 students and is increasing at a rate of 2% per year. Use an exponential function to find the population of the school after 9 years.
Round to the nearest whole number.
Tags
CCSS.HSF-LE.A.1C
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Kathy plans to purchase a car that depreciates at a rate of 12% per year. The initial value of the car is $21,000. Use an exponential function to find the value of the car after 3 years.
Round your answer to 2 decimal places.
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
During a certain period of time, about 70 northern sea otters had an annual growth of 18%. Use an exponential function to find the number of sea otters after 4 years.
Round to the nearest whole number.
4.
MULTIPLE CHOICE QUESTION
1 min • 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 is the population of the town 21 years later?
6191
9912
72519
14108
Tags
CCSS.HSF-LE.A.1C
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using the exponential function equation f(x)=ab^x, where a is the starting value and b is the growth or decay, and x is the time, find the population of fish after 8 weeks if the population doubles every week and initially there are 1000 fish.
128000
512000
64000
256000
Tags
CCSS.HSF-IF.C.8B
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using the exponential function equation f(x)=ab^x, where a is the starting value and b is the growth or decay, and x is the time, find the population of rabbits after 6 months if the population triples every month and initially there are 50 rabbits.
50000
145800
3000
800
Tags
CCSS.HSF-IF.C.8B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using the exponential function equation f(x)=ab^x, where a is the starting value and b is the growth or decay, and x is the time, find the value of a house after 15 years if it initially worth $250,000 and increases by 5% each year.
$405,518.75
$500,000
$425,000
$375,000
Tags
CCSS.HSF-IF.C.8B
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