Exponential Growth and Decay Word Problems

Exponential Growth and Decay Word Problems

Assessment

Assessment

Created by

Chris Schanding

Mathematics

9th Grade

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10 questions

Show answers

1.

Multiple Choice

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

2.

Multiple Choice

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

3.

Multiple Choice

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

4.

Multiple Choice

30 sec

1 pt

Jenny has $20 in a savings account. The interest rate is 5%, compounded annually. To the nearest cent, how much interest will she earn in 2 years?

$2.05

$45.79

$1.99

$7.51

5.

Multiple Choice

30 sec

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

6.

Multiple Choice

30 sec

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

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