Question 36 Answer and Explanation _ACT December 2006 Form 63D Math Section

36. The fuel remaining in the gas tank of a particular car that starts with a full 16-gallon tank of gas can be approximated by the equation y = 16 - 0.05x, where x is the number of miles the car has traveled for 0 ≤ x ≤ 320, and y is the number of gallons remaining in the tank. According to this equation, which of the following statements is true about this car?

F. In traveling 0.05 miles, the car uses 1 gallon of gas.

G. In traveling 1 mile, the car uses 0.05 gallon of gas.

H. In traveling 16 miles, the car uses 0.05 gallon of gas.

J. In traveling 16 miles, the car uses 1 gallon of gas.

K. In traveling 80 miles, the car uses 16 gallons of gas.

Answer and Explanation

Your Answer is

Correct Answer is G

Explanation

According to the original equation, each mile corresponds to negative 0.05 gallons, so each mile consumes 0.05 gallons of gas. Choose G.