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

y = 15 ( 1.35 ) t y=15\left(1.35\right)^t y = 1 5 ( 1 . 3 5 ) t

y = 15 ( 35 ) t y=15\left(35\right)^t y = 1 5 ( 3 5 ) t

y = 15 ( 0.35 ) t y=15\left(0.35\right)^t y = 1 5 ( 0 . 3 5 ) t

y = 35 ( 1.15 ) t y=35\left(1.15\right)^t y = 3 5 ( 1 . 1 5 ) t

y = 15 ( 135 ) t y=15\left(135\right)^t y = 1 5 ( 1 3 5 ) t

The expression 5(2) x gives the number of leaves in a plant as a function of the number of weeks since it was planted. What does 2 represent in this expression?

The number of leaves on the plant multiplies by 2 each week

The plant was planted 2 weeks ago

The plant initially had 2 leaves

The UN uses the equation f(t) = 6.08(1.0126) x to model how the population of the world will increase over a number a years since 2000. What does the 6.08 represent?

The starting population in the year 2000

The population of the world in billions the first year.

The annual rate that the population will increase

The number of years that the UN has done the study.

The equation P(t) = 2.5(1.03) t is used by a research group to predict the growth of a certain species of fish in a lake, in millions, over t years since their study began in 2010. What does the 2.5 represent?

The initial number of fish in millions at the start of the study.

The percentage increase of the fish population per year.

The number of years the study has been conducted.

The predicted maximum population of the fish in millions.

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

Mathematics

7th Grade - University

CCSS covered

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

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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

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

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

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

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

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

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

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

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?

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.

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

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

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

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

Daniel’s Print Shop purchased a new printer for $35,000. Each year it depreciates at a rate of 5%. Which equation represents the value of the printer over time?

The attendance at the art museum at the New Year’s opening was 250 people. The attendance has been increasing at a rate of 3% each month. Which equation represents the growth of the population each month?

Since January 1980, the population of the city of Brownville has grown according to the mathematical model y=720,500(1.022)^x, where x is the number of years since January 1980. What is the percentage increase of the population annually?

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Similar Resources on Wayground

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Discover more resources for Mathematics

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

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

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?

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.

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

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

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

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

Daniel’s Print Shop purchased a new printer for $35,000. Each year it depreciates at a rate of 5%. Which equation represents the value of the printer over time?

The attendance at the art museum at the New Year’s opening was 250 people. The attendance has been increasing at a rate of 3% each month. Which equation represents the growth of the population each month?

Since January 1980, the population of the city of Brownville has grown according to the mathematical model y=720,500(1.022)x, where x is the number of years since January 1980. What is the percentage increase of the population annually?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

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.

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

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

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

Since January 1980, the population of the city of Brownville has grown according to the mathematical model y=720,500(1.022)^x, where x is the number of years since January 1980. What is the percentage increase of the population annually?