Growth and Decay 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
Lauren has $90 in a savings account. The interest rate is 5%, compounded annually. To the nearest cent, how much will she have in 2 years?
$99.23
$21.98
$56.46
$9.21
Tags
CCSS.HSF-LE.A.1C
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A cliff overlooking Oak Grove Lake is experiencing erosion, losing elevation at a rate of 5% every millennium. The cliff's current elevation is 1,200 meters. What will its elevation be in 6 millennia? (Round to the nearest whole number if necessary).
882
465
349
975
Tags
CCSS.HSF-LE.A.1C
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kelsey deposited $30 in a savings account earning 10% interest, compounded annually. To the nearest cent, how much interest will she earn in 3 years?
$9.93
$2.01
$17.60
$5.75
Tags
CCSS.HSF.BF.A.2
4.
MULTIPLE CHOICE QUESTION
1 min • 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
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The mice population is 25,000 and is decreasing by 20% each year. What will be the mice population after 3 years?
12,800
15,777
102, 475
2,500
Tags
CCSS.HSF.BF.A.2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Your new computer cost $1500 but it depreciates in value by about 18% each year. How much will your computer be worth in 6 years? (Round to the nearest cent.)
$456.01
$556.98
$778.22
$332.63
Tags
CCSS.HSF-LE.A.1C
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Does the following equation represent growth or decay?
Growth
Decay
Tags
CCSS.HSF-IF.C.8B
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