Algebra Unit 3B Review: Exponential functions
Authored by Bethany Piccininni
Mathematics
7th - 9th Grade
CCSS covered
Used 8+ times
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24 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A population of mutant venus fly trap plants are taking over an island in the South Pacific, capturing everything from insects to small rodents. When they were first discovered they covered 4 square kilometers. As the population grows, the plants spread and cover more land. Use the table to write an equation.
y=4(4)x
y=4(2.68)x
y=4(1+1.67)x
y=4(1.67)x
Tags
CCSS.HSF.LE.A.2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the exponential equation that models this situation?
y = 8(15,000)x
y = 15,000(1.08)x
y = 15,000(0.92)x
y = 15,000(0.08)x
Tags
CCSS.HSF.LE.A.2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.
Tags
CCSS.HSF.LE.A.2
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Determine if the equation y = 15(1.35)x represents exponential growth or decay and justify.
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
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
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. What type of function does the situation represent?
Increasing LINEAR
Decreasing LINEAR
EXPONENTIAL growth
EXPONENTIAL decay
Tags
CCSS.HSF.LE.A.2
CCSS.HSF.LE.A.1
CCSS.HSF.LE.A.3
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the y-intercept for the function: f(x) = 800(0.85)x?
800
0.85
0.15
x
Tags
CCSS.HSF-IF.C.7E
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What type of function is f(x)=2(1/7)x ?
Tags
CCSS.HSF-IF.C.8B
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