Exponential Review

What is the growth or decay rate for the following equation?
y = 2.5(1.15)^x

• -15% decay
• 115% growth
• 15% growth
• 25% growth

Tags

CCSS.HSF-IF.C.8B

What is the growth or decay rate for the following equation?
y = 1/3(0.7)^x

• 7% decay
• 70% decay
• 30% growth
• 30% decay

Tags

CCSS.HSF-IF.C.8B

A population has a growth/decay factor of 0.90.  What is happening to the population?

• It grows at a rate of 90%
• It dies at a rate of 90%
• It grows at a rate of 10%
• It dies at a rate of 10%

Tags

CCSS.HSF-IF.C.8B

A population has a growth/decay factor of 1.045 What is happening to the population?

• It grows at a rate of 45%
• It grows at a rate of 4.5%
• It dies at a rate of 45%
• It dies at a rate of 1045%

Tags

CCSS.HSF-IF.C.8B

What is the growth/decay rate for the following table?

• 100% growth
• 50% growth
• 25% growth
• 25% decay

Tags

CCSS.HSF-LE.A.1A

An adult takes 800 mg of ibuprofen. Each hour, the amount of ibuprofen in the person’s system decreases by about 29%. How much ibuprofen is left after 6 hours? 

• 101
• 102
• 103
• 104

Tags

CCSS.HSF.LE.A.4

You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. What is the approximate value of the land in the year 2011?

• $344,022
• $31,500
• $15,000
• $28,500

Tags

CCSS.HSF.BF.A.2

The original value of a painting is $1400, and the value increases by 9% each year. Write an exponential growth function to model this situation.

• y=1400(1.09)^x
• y=1.09(1400)^x
• y=1400(.91)^x
• y=1.09^x

Tags

CCSS.HSF.LE.A.2

The population of Winnemucca, Nevada, can be modeled by P=6191(1.04)^t where t is the number of years since 1990. What percent did the population increase each year?

• 4%
• It doesn't say
• I don't know
• 400%

Tags

CCSS.HSF-LE.A.1C

What is r, the decay rate, for the function: f(x) = 800(0.85)^x?

• 800
• 0.85
• 0.15
• x

Tags

CCSS.HSF-IF.C.8B