Exponential growth and decay

Select all the equations that represent exponential decay.

Which of these functions is a growth function? Check all that apply.

• f(x)=7(1.2)^x

• f(x)=5(0.8)^x

• f(x)=0.5(3)^x

• f(x)=3(4/3)^x

Select all the equations that represent exponential decay.

• $y=\frac{1}{2}\left(4\right)^x$

• $y=4\left(\frac{1}{2}\right)^x$

• $y=80\left(1.4\right)^x$

• $y=60\left(0.7\right)^x$

• $y=3\left(0.6\right)^x$

If the growth rate is 80%, what is the growth factor?

• 0.2

• 0.8

• 1.2

• 1.8

• 1

• 0

• 4

What is shown in this graph?

• Growth

• Decay

• Neither

This is an example of:

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay

 $y=100\left(5\right)^x$  

• Growth

• Decay

• Neither

• The graph represents an exponential growth situation.
• Eventually, the car will be worth exactly $0.
• The starting value of the car was $12,000.
• The range for the situation is y ≥ 0.

This is an example of:

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay