![]() Getting to the Answer: The airplane is traveling at an average speed of 500 miles per hour, and the plane's fuel mileage is 0.2 miles per gallon. In this particular function, the independent variable is time (in hours), and the dependent variable is remaining fuel (in gallons). ![]() Strategic Advice: Sometimes, the units on the variables can help you piece together a function that represents a real-world scenario. 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?Ĭategory: Passport to Advanced Math / Functions Flight 818's fuel tank has 42,000 gallons of fuel at the beginningof an international flight. 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.
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