Exponential Equations and Word Problems
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Write an exponential function to model the situation. Then solve. The cost of tuition at a college is $12,000 and is increasing at a rate of 6% per year. Which equations represents this situation?
C(t) = 1.06(12000)t
C(t) = 12000(.06)t
C(t) = 12000(.06)t
C(t) = 12000(1.06)t
Tags
CCSS.HSF.LE.A.2
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Write an exponential function to model the situation. You invest $1500. Your investment increases at a rate of 3.5%.
B(t) = 1500(0.965)t
B(t) = 1500(1.035)t
B(t) = 1500(.035)t
B(t) = 1500(1.965)t
Tags
CCSS.HSF.LE.A.2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Write an exponential function to model the situation. The value of a car is $18000 and is depreciating at a rate of 12% per year.
V(t) = .88(18000)t
V(t) = .12(18000)t
V(t) = 18000(.88)t
V(t) = 18000(.12)t
Tags
CCSS.HSF.LE.A.2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the a-value (or y-intercept) for the function: f(x) = 800(0.85)x?
800
0.85
0.15
x
Tags
CCSS.HSF-IF.C.7E
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The equation f(x) = 300(1.06)x is being used to calculate the amount of money in a savings account. What does the 1.06 represent?
6% growth
6% decay
1.06% growth
.06% decay
Tags
CCSS.HSF-IF.C.8B
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Determine if the equation y = 15(1.35)x represents exponential growth or decay and justify. Hint: Think about the growth and decay equations.
Growth, because the scale factor is greater than 1
Growth, because the scale factor is less than 1
Decay, because the scale factor is greater than 1
Decay, because the scale factor is less than 1
Tags
CCSS.HSF-IF.C.8B
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Linear Growth
Linear Decay
Exponential Growth
Exponential Decay
Tags
CCSS.HSF-IF.C.8B
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