Interpreting exponential functions

A population of rabbits begins with 20 rabbits and doubles each year for 15 years. The population can be represented by the which function?

• f(x)=15(2)^x

• f(x)=20(2)^x

• f(x)=2(15)^x

• f(x)=15(20)^x

Tags

CCSS.HSF.LE.A.2

”A function begins with 20 rabbits and doubles each year”

What is the y-intercept from the previous function?

• (0,2)

• (2,0)

• (20,0)

• (0,20)

Tags

CCSS.HSF-IF.C.7E

How many rabbits would there be after 8 years?

"If a rabbit population begins with 20 rabbits and doubles each year"

• 320

• 160

• 2560

• 5120

Tags

CCSS.HSF.BF.A.2

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• If YES, add a new graph page on your nspire app

• If NO, still add a new graph page on your nspire app

Tags

CCSS.8.EE.C.7B

A certain bacterium triples every 10 minutes. If the sample population begins with 5 cells which equation represents this function?

• f(x)= 3(5)^x

• f(x)= 10(3)^x

• f(x)= 5(10)^x

• f(x)= 5(3)^x

Tags

CCSS.HSF.LE.A.2

“A bacterium begins with 5 cells and triples”

What Is the y-intersect of the previous question?

• (0,5)

• (3,0)

• (0,3)

• (5,0)

Tags

CCSS.HSF.LE.B.5

"A bacterium begins with 5 cells and tripples every 10 minutes"

How many bacteria would there be in 20 minutes?

• 15

• 45

• 135

• 405

Tags

CCSS.HSF.LE.A.4

"A bacteria begins with 5 cells and triples every 10 minutes"

When would there be 405 bacteria?

• 10 minutes

• 20 minutes

• 40 minutes

• 60 minutes

Tags

CCSS.HSF.LE.A.4