Exponential growth and decay

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

• Exponential Growth

• Exponential Decay

• Linear

• None

Is y = 4(.20)^x growth or decay?

• Growth

• Decay

What is the initial amount for the function: f(x) = 300(1.16)^x?

• 300

• 1.16

• .16

• x

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

Pick the equation that is exponential decay

• y=2000(0.88)
• y=0.5(1.88)

Suppose a culture of bacteria begins with 5000 cells and dies by 30% each year. Write an equation that represents this situation.

• y=5000(0.7)^x

• y=30(5000)^x

• y=5000(1.3)^x

• y=5000x^x

Select all the equations that represent exponential decay.

This is an example of:

• Linear Growth

• Linear Decay

• Exponential Growth

• Exponential Decay