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Mastering Exponential Models and Equations in Real Life

Authored by Anthony Clark

English, Mathematics

8th Grade

CCSS covered

Mastering Exponential Models and Equations in Real Life
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A bacteria culture doubles in size every 3 hours. If the initial population is 500, how many bacteria will there be after 12 hours?

2000

8000

10000

4000

Tags

CCSS.HSF.LE.A.4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A car's value decreases by 20% each year. If the car is currently worth $15,000, what will its value be after 3 years?

$12,000

$5,000

$10,000

$7,680

Tags

CCSS.HSF.BF.A.2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A bank offers an account that compounds interest annually at a rate of 5%. If you deposit $1,000, how much will you have in the account after 5 years?

1150.00

1276.28

1500.00

1000.00

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A certain tree species grows at a rate of 1.5 times its height every year. If a tree is 2 feet tall now, how tall will it be after 4 years?

12 feet

6 feet

8 feet

10.125 feet

Tags

CCSS.HSF.BF.A.2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A population of fish in a lake is modeled by the equation P(t) = 200e^(0.3t), where P is the population and t is the time in years. What will the population be after 5 years?

1200

500

750

896

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A smartphone's battery life decreases exponentially. If it lasts 24 hours when fully charged, how long will it last after 2 days of regular use, assuming it loses 10% of its life each day?

15 hours

19.44 hours

22 hours

20 hours

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A viral video is viewed by 1,000 people on the first day and the views double each day. How many views will it have on the 7th day?

256000

64000

128000

32000

Tags

CCSS.HSF.BF.A.2

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