Exponential Functions

What type of function is f(x)=2(1/7)^x ?

• Exponential Growth
• Linear
• Exponential Decay
• None of the Abovee

Tags

CCSS.HSF-IF.C.8B

Write an equation that models the following situation:

Samantha's hair grows fast. 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

What type of function is y = 7(5/4)^x?

• Exponential Growth
• Exponential Decay
• Linear
• None of the above

Tags

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.3

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

Is the pictured graph growth, decay, or linear or none?  

• Growth
• Decay
• Linear
• None

Tags

CCSS.HSF-IF.C.7E

Bacteria growing can be represented by which of the following?

• Exponential Growth

• Exponential Decay

Tags

CCSS.HSF-LE.A.1A

The population of a city can be modeled by P=6000(1.04)^t where t is the number of years since 1990. What percent did the population increase each year?

• 4%

• 6000%

• 1.04%

• 400%

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. How many mosquitoes will there be after 4 months?

• 9765

• 9006

• 5433

• 9766

Tags

CCSS.HSF.BF.A.2

Denise has $80 in a savings account that earns 10% interest, compounded annually.
To the nearest cent, how much will she have in 3 years?

• $106.48
• $26.48
• $8 
• $104

Tags

CCSS.HSF-LE.A.1C

You bought a boat in 2004 for $12,500. The boat's value depreciates by 7% a year. How much is the boat worth in 2012?

• $11625

• $6994.77

• $21,477

• $875