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Mathematics 14 Online
OpenStudy (anonymous):

Suppose that the weight (in pounds) of an airplane is a linear function of the total amount of fuel (in gallons) in its tank. When graphed, the function gives a line with a slope of 6.1 . See the figure below. With 50 gallons of fuel in its tank, the airplane has a weight of 2205 pounds. What is the weight of the plane with 80 gallons of fuel in its tank?

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