A commercial airline has calculated that the approximate fuel mileage for its 600-passengerairplane is 0.2 miles per gallon when the plane travels at an average speed of 500miles per hour. Flight 818's fuel tank has 42,000 gallons of fuel at the beginningof an international flight. If the plane travels at an average speed of 500 milesper hour, which of the following functions f models the number of gallons of fuel remaining in the tank t hours after the flight begins?
A.
B.
C.
D.
Answer:A
A commercial airline has calculated that the approximate fuel mileage for its 600-passengerairplane is 0.2 miles per gallon when the plane travels at an average speed of 500miles per hour. Flight 818's fuel tank has 42,000 gallons of fuel at the beginningof an international flight. If the plane travels at an average speed of 500 milesper hour, which of the following functions f models the number of gallons of fuel remaining in the tank t hours after the flight begins?
A. B. C. D.
Explanation: A