The Fuel Cost, C, for a 3000 Mile Trip Depends

Multiple Choice

The fuel cost, C, for a 3000 mile trip depends on the price, p, per gallon of gasoline and fuel economy in miles per gallon, m, of the car according to the formula . On the same set of axes, sketch a graph of C as a function of m with fixed gas prices of $2.00, $2.25, $2.50, and $2.75. What do you observe as gas prices increase?

A) The graphs are all straight lines from the origin with slopes that get progressively less steep.
B) The graphs are similarly shaped curves that get progressively higher.
C) The graphs are all straight lines from the origin with slopes that get progressively steeper.
D) The graphs are similarly shaped curves that get progressively lower.