Question

The cost of renting a car for a day is given by the linear function C(x) = 0.3x + 21, where C(x) is in dollars and x is the number of miles driven. Use this information to answer the questions below.

a. Find the cost of driving the car 100 miles. The cost is $______.

Answer 1

Using the linear function C(x) = 0.3x + 21 and substituting x with 100 miles, the cost for driving the car 100 miles is calculated to be $51.

Step-by-step explanation:

To find the cost of driving the car 100 miles using the linear function C(x) = 0.3x + 21, we simply need to substitute the value of x (the number of miles driven) with 100 into the equation and solve for C(x):

C(100) = 0.3(100) + 21

C(100) = 30 + 21

C(100) = $51

The cost of driving the car 100 miles is therefore $51.