
Exponential Growth & Decay Word Problems
Authored by Ashleigh Larsen
Mathematics
10th - 12th Grade
CCSS covered

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16 questions
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1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
North Dakota has recently had the fastest growing population out of all 50 states. On Jan 1, 2013, the population of North Dakota was 700,000 people. North Dakota’s population has been growing by 5% per year. Express North Dakota’s population, N, in terms of years since 2013, t.
Check the BEST answer:
N=700,000(1.05)t
N=700,000(1.5)t
N=700,000(1-0.05)t
N=700,000(0.95)t
Tags
CCSS.HSF.LE.A.2
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
An air freshener starts with 30 grams of fluid, and the amount of fluid decreases by 12% per day. Express the amount of grams of freshener, Q, that remains, t, days after it has begun being used.
Check the BEST answer: (HINT: that means simplify what is in the parenthesis)
Q=30(1+0.12)t
Q=30(1-0.12)t
Q=30(0.88)t
Q=12(1.30)t
Tags
CCSS.HSF.LE.A.2
3.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
You buy a car for $8000 that depreciates at a rate of 11% a year. How much is the car worth after 5 years?
Round to the nearest cent. (two decimal places)
Tags
CCSS.HSF.BF.A.2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Middletown High School has student elections every year. Lately, the school has seen a 5% decrease in voting from election to election. If 910 students voted this year, how many will be expected to vote 8 years from now? (Round to the nearest whole number if necessary).
604
777
29
198
Tags
CCSS.HSF-LE.A.1C
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
More and more people are purchasing food from farmers' markets. As a consequence, a market researcher predicts that the number of farmers' markets will increase by 15% each year. If there are 6,200 farmers' markets this year, how many will there be in 10 years? (Round to the nearest whole number if necessary).
25,082
12,937
62,000
43,511
Tags
CCSS.HSF-LE.A.1C
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A publishing industry report predicts that magazine subscriptions will drop by 10% each year. If this prediction is correct, then how many subscribers will a magazine with 98,000 subscribers have in 10 years? (Round to the nearest whole number if necessary).
34,170
16,348
7690
76,023
Tags
CCSS.HSF.BF.A.2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Thanks to its environmental initiatives, Silvergrove has cut its annual CO2 emissions by 5%. This year, the town produced 290,000 metric tons of emissions. If the downward trend continues, how much CO2 will be produced 7 years from now? (Round to the nearest whole number if necessary).
202,518
135,792
78,376
20,658
Tags
CCSS.HSF.BF.A.2
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