to calculate daily car rentals.

Question

rental car charges $15 per day plus $0.22 per mile to rent a car. Determine a linear function that can be used to calculate daily car rentals.

Answer 1

You would want to use the equation y=mx+b

 

y would be what you are trying to calculate. in terms of this problem it would represent the daily car rentals

x would be the changing variable in the problem. in this problem that would be the number of miles you drove.

 

m would be the rate of the variable. for this problem that would be the $0.22 per mile you drive.

 

B would be any additional, fixed rate. a one time fee. So for this problem that would be the $15 daily cost.

 

so plugging the numbers from the problem into the function you would come up with:

 

y=0.22x+15