Keisha rented a truck for one day. There was a base fee of $8.25, and there was an additional charge of 9 cents for each mile driven. The total cost, C(in dollars), for driving x miles is given by the following function.
C(x)=0.09x+8.25
What is the total rental cost if Keisha drove 5 miles?
To find the total rental cost, we substitute x=5 into the function C(x)=0.09x+8.25:
C(5)=0.09(5)+8.25
C(5)=0.45+8.25
C(5)=8.70
Therefore, the total rental cost if Keisha drove 5 miles is $8.70.