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Exponential Decay

Authored by Barbara White

Mathematics

8th Grade

CCSS covered

Exponential Decay
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23 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The value of a car is $15,000 and depreciates at a rate of 8% per year. What is the decay factor?

.08
1.08
.92
8

Tags

CCSS.HSF-IF.C.8B

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Classify the model as Exponential GROWTH or DECAY.
A=1200(.85)6

Growth
Decay

Tags

CCSS.HSF-IF.C.8B

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Classify the model as Exponential GROWTH or DECAY.
A=10(1.01)3

Growth
Decay

Tags

CCSS.HSF-IF.C.8B

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What type of function is y = 7(5/4)x?

Exponential Growth
Exponential Decay
Linear
None of the above

Tags

CCSS.HSF-IF.C.8B

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Write an equation that models the following situation:
Samantha's hair was known to grow very rapidly. It began at a length of 6 in and grew at a rate of 14% a week.

y=6(0.14)x
y=6(1+14)x
y=6(1.14)x
y=6(0.86)x

Tags

CCSS.HSF.LE.A.2

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

y=5000(0.7)x
y=30(5000)x
y=5000(1.3)x
y=5000xx

Tags

CCSS.HSF.LE.A.2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A population of fish starts at 8,000 and decreases by 6% per year. What is the population of fish after 10 years?

14327
4309
839
7680

Tags

CCSS.HSF-LE.A.1C

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