
Discrete Exponential Function Word Problems
Authored by Anthony Clark
Mathematics
9th Grade
CCSS covered

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 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. (HINT: Write out the equation on a separate piece of paper and hen simplify inside the parenthesis)
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
2.
MULTIPLE CHOICE QUESTION
1 min • 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
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following functions shows an initial amount of $15 and an increase of 35% each year?
y = 15(35)x
y = 15(1.35)x
y = 15(0.35)x
y = 35(1.15)x
Tags
CCSS.HSF.LE.A.2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the initial value?
0
3
33
66
Tags
CCSS.HSF.LE.B.5
5.
MATH RESPONSE QUESTION
1 min • 1 pt
Eduardo currently has 500 followers on TikTok. He makes a video after the basketball game and it goes viral! Since he became internet famous, the number of followers is increasing by 25% daily. Write an exponential function that represents the relationship between x, the number of days since Eduardo posted the video and y, the total number of followers Eduardo has.
Mathematical Equivalence
ON
Tags
AI.9.9.C
6.
DRAG AND DROP QUESTION
1 min • 1 pt
A new savings account is opened with $400 and gains 3% every year. What is the exponential function?
y = (a) ( 1 (b) (c) )^x (^ means to power of x - x is the exponent)
400
+
0.03
3
0.3
0.97
4
Tags
CCSS.HSF.LE.A.2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Is this exponential growth or decay?
Growth, because of 7
Growth because of 1.2
Decay, because of 1.2
Decay because of 7
Tags
CCSS.HSF-IF.C.8B
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