Exponential Word Problems Compounding

Quiz
•
Mathematics
•
9th Grade
•
Hard
Standards-aligned
Anthony Clark
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Miguel had 25 bacteria in his petri dish at 2 PM. There were 72 in the dish at 2:30 PM. Assuming exponential growth, at what rate are they increasing?
9.6% per minute
0.03526% per minute
35.26% per minute
3.526% per minutes
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The population of Guyana was roughly 787,000 in 2020 and 747,000 in 2000. If the population is growing exponentially, what is the rate of growth?
0.002608
0.00113
0.0527
.2608
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If a population of 300 animals in a certain region is growing exponential at 2% per year, when will the population reach 400?
14.4 years
15 years
6.2 years
20 years
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Exponential growth of 75%
Exponential decay of 75%
Exponential growth of 25%
Exponential decay of 25%
5.
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
6.
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
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Using this equation above where the time is in hours, which of the following are true? Select all that apply.
The half-life is 23 hours.
The start amount is 64.
The equation represents exponential growth.
r will be a negative number.
The half-life is 32 hours.
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