A car retal agency charges a per day rental fee which includes a daily mile age allowance plus a certain amount per mile driven over the allowance. The graph above compares the miles driven over the allowance and the total cost for a 3-day rental. What does the C-intercept most likely represent in this scenario?

Options

A. The per day rental fee for renting the car
B. The number of mile a rental may drive the car per day
C. The penalty a renter must pay if the daily mileage allowance is exceeded
D. The total cost of a 3-day rental assuming the car is not driven over the allowance

Answer

D

Explanation

Difficult: Medium
Category: Heart of Algebra/ Linear Equations
Strategic Advice: In a real-world scenario, the slope of a line represents a unit rate and the y-intercept represents a flat fee or a starting amount. In some questions, you may meed to use the axis titles to interpret the meaning of the intercept.
Getting to the Answer: With miles driven over the allowance plotted along the horizontal axis and the total cost for a 3-day rental plotted along vertical axis (the C-axis), the point (0. 63) indicates that driving 0 miles over the allowance (or not driving over the allowace ) results in a cost $63. This makes (D) correct.