Introductions to Exponential Functions

The equation A = 1300(1.02)^x is being used to calculate the amount of money in a savings account. What does 1.02 represent in this equation?

• 0.02% decay

• 0.02% growth

• 2% decay

• 2% growth

Milton has his money invested in a stock portfolio. The value, v(x), of his portfolio can be modeled with the function v(x) = 30,000(0.78)x , where x is the number of years since he made his investment. Which statement describes the rate of change of the value of his portfolio?

• It decreases 78% per year.

• It decreases 22% per year.

• It increases 78% per year.

• It increases 22% per year.

What is the decay rate as a percent?

• 75%

• 0.75%

• 750%

• .075%

Which of the following statements best describes the table?

• This is a linear function because the rate of change is constantly adding by 2.

• This is an exponential function because the rate of change is constantly multiplying by 2.

• This is a linear function because the rate of change is constantly adding by 8.

• This is an exponential function because the rate of change is constantly multiplying by 8.

Which of the following statements best describes the table?

• This is a linear function because the rate of change is constantly adding by 5.

• This is an exponential function because the rate of change is constantly multiplying by 5.

• This is a linear function because the rate of change is constantly adding by 6.

• This is an exponential function because the rate of change is constantly multiplying by 6.

Which of the following statements best describes the table?

• This is a linear function because the rate of change is constantly adding by 5.

• This is an exponential function because the rate of change is constantly multiplying by 5.

• This is a linear function because the rate of change is constantly adding by 60.

• This is an exponential function because the rate of change is constantly multiplying by 60.

Which of the following equations correctly describes the table?

Which of the following equations correctly describes the table?

Which of the following equations correctly describes the table?

Which of the following equations correctly describes the table?