Exponential Function Exam

What type of function describes the story below?
A cell population dies by one half every 10 minutes.

• linear

• quadratic

• exponential

• none of the above

Which represents exponential decay?

• A

• B

• C

• D

What does this graph represent?

• Exponential Decay

• Exponential Growth

• Neither

What value would go into the blank spot in this chart of an exponential function?

• 54

• 27

• 30

• 81

A new savings account is opened with $600 and gains 4% every year. What is the exponential function?

• f(x)=600(.96)^x

• f(x)=600(1-0.04)^x

• f(x)=600(1.04)^x

• f(x)=600(0.04)^x

What does the graph represent?

• Exponential Decay

• Exponential Growth

• Neither

Which does y= 2(.5)^x represent?

• Exponential Growth

• Exponential Decay

Which does y=.5(2)^x represent?

• Exponential Growth

• Exponential Decay

Classify the model as Exponential GROWTH or DECAY.
A=1200(.85)⁶

• Growth

• Decay

Classify the model as Exponential GROWTH or DECAY.
A=10(1.01)³

• Growth

• Decay