Use Exponential Functions Answers

Given the table below, determine if the data represents a linear or an exponential function and find a possible formula for the function. x 0 1 2 3 4 f (x) 12.5 13.75 15.125 16.638 18.301

Given the table below, determine if the data represents a linear or an exponential function and find a possible formula for the function. x 0 1 2 3 4 f (x) 18 14 10 6 2

What is the y-intercept of the graph of y = 2.5x?

If $5000 is invested at an interest rate of 4% each year, what is the value of the investment in 5 years? Write an exponential function and solve.

From the table below, determine whether the data shows an exponential function. Explain why or why not. x31-1-3y1234

A guest on a talk show tends to receive many phone calls right after she is on the show, and then the calls become less frequent. This can be represented by the equation y = 30(0.92)d, where y is the number of phone calls after d days. How many phone calls should she expect after a week?

Determine which of the following graphs represent the equation below. Also determine the y-intercept of the graph.

Given the table below, determine if the data represents a linear or an exponential function and find a possible formula for the function. x 0 1 2 3 4 f(x) 0 2 4 6 8

Exponential functions exhibit exponential growth (or decay). What does this mean to the graphs of these functions?

From the table below, determine whether the data shows an exponential function. Explain why or why not. x321–1y820.50.125