Growth vs Decay Exponential Word Problems

Growth vs Decay Exponential Word Problems

9th Grade

10 Qs

quiz-placeholder

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Growth vs Decay Exponential Word Problems

Growth vs Decay Exponential Word Problems

Assessment

Quiz

Mathematics

9th Grade

Hard

Created by

Anthony Clark

FREE Resource

10 questions

Show all answers

1.

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

2.

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

3.

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

4.

MULTIPLE SELECT QUESTION

1 min • 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

5.

MULTIPLE CHOICE QUESTION

1 min • 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

6.

MULTIPLE SELECT QUESTION

1 min • 1 pt

P = 8(1.23)t

Is the function growth or decay?

Check the box:

Growth

Decay

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

What is the initial quantity?

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