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Solve the Equation for Y y=43.810.395xy = 43.81 - 0.395 x

Question 99

Multiple Choice

Solve the equation for y.
-When going more than 38 miles per hour, the gas mileage of a certain car fits the model y=43.810.395xy = 43.81 - 0.395 x where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what
Speed will the car average 15 miles per gallon? (Round to nearest whole number.)


A) 73 mph
B) 98 mph
C) 149 mph
D) 48 mph

Correct Answer:

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