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A1 Warm-Up 9.4 Practice Day - Exponential Growth & Decay

Mathematics

7th Grade - University

CCSS covered

Used 2+ times

A1 Warm-Up 9.4 Practice Day - Exponential Growth & Decay
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21 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

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

y=5000(0.7)x

y=5000(0.3)x

y=5000(1.3)x

y=5000(30)x

Tags

CCSS.HSF.LE.A.2

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The number of mosquitoes at the beginning of the summer was 4,000. The population of mosquitoes is expected to grow at a rate of 25% a month. Which equation represents the rate of population growth?

y=4000(0.75)x

y=0.25(4000)x

y=4000(0.25)x

y=4000(1.25)x

Tags

CCSS.HSF.LE.A.2

3.

MULTIPLE CHOICE QUESTION

45 sec • 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

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the percentage rate of growth or decay for the function? y= 6(0.85)x

0.85%

15%

85%

0.15%

Tags

CCSS.HSF-IF.C.8B

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the percentage rate of growth or decay for the function? y= 6(0.62)x

0.38%

38%

62%

0.62%

Tags

CCSS.HSF-IF.C.8B

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following functions shows an initial amount of $15 and an increase of 35% each year?

y = 15(35)x
y = 15(1.35)x
y = 15(0.35)x
y = 35(1.15)x

Tags

CCSS.HSF.LE.A.2

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the percentage rate of growth or decay for the function? y= 6(1.24)x

0.24%

124%

24%

2.4%

Tags

CCSS.HSF-IF.C.8B

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