Silvina2b
2022-08-07
Answered

The gas mileage for a certain vehicle can be approximated by m = -0.04x^2 + 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.

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Ashlynn Stephens

Answered 2022-08-08
Author has **25** answers

m = -0.04 x^2 + 3.6 x - 49

30 = -0.04 x^2 + 3.6 x - 49

0.04 x^2 - 3.6 x + 79 = 0

x = 52 mi/hr (or) 38 mi/hr

30 = -0.04 x^2 + 3.6 x - 49

0.04 x^2 - 3.6 x + 79 = 0

x = 52 mi/hr (or) 38 mi/hr

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