Exponentials with Change of Rate

Quiz
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
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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