SOLUTION: The gas mileage for a certain vehicle can be approximated by m = −0.04x2 + 3.6x − 49, where x is the speed of the vehicle in mph. Determine the speed(s) at which the ca
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Question 1009294: The gas mileage for a certain vehicle can be approximated by m = −0.04x2 + 3.6x − 49, where x is the speed of the vehicle in mph. Determine the speed(s) at which the car gets 30 mpg. Round to the nearest mph.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Use quadratic formula
38 mi/hr
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and, also:
52 mi/hr
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check:
close enough
You can check the other solution
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