Exponentials Unit Test Prep

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%

• 104%

• .4%

• 400%

Tags

CCSS.HSF-LE.A.1C

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

An adult takes 400 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? 

• 51 mg
• 284 mg
• 1843 mg
• 116 mg

Tags

CCSS.HSF.LE.A.4

The original value of a painting is $1400, and the value increases by 9% each year. Write an exponential 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

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

In an exponential function, what does the 'a' represent? 

• SLOPE
• RATE OF CHANGE
• INITIAL AMOUNT
• GROWTH OR DECAY FACTOR

Tags

CCSS.HSF.LE.B.5

In an exponential function, what does the 'b' represent? 

• SLOPE
• RATE OF CHANGE
• INITIAL AMOUNT
• GROWTH OR DECAY  FACTOR

Tags

CCSS.HSF-IF.C.8B

Describe the function:

y = 1000(.13)^x

• growth by 87%

• decay by 87%

• growth by 13%

• decay by 13%

Tags

CCSS.HSF-IF.C.8B

Which of the equations below represent this table?

• y=3⋅(36)^x

• y=36⋅(3)^x

• y=⅓⋅(36)^x

• y=36⋅(⅓)^x

Tags

CCSS.HSF.LE.A.2

Is this exponential growth or decay?

• Growth
• Decay