8. A truck is to be driven 135 km at a constant speed of x km/hr. Speed laws require that 50

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8. A truck is to be driven 135 km at a constant speed of x km/hr. Speed laws require that
50<x<100. Assume that gasoline costs $2.95 per gallon and is consumed at the rate of
2+
gallons per hour. If the driver paid $16 dollars per hour, find the most economical speed
360
and the total cost for the trip.
Transcribed Image Text:8. A truck is to be driven 135 km at a constant speed of x km/hr. Speed laws require that 50<x<100. Assume that gasoline costs $2.95 per gallon and is consumed at the rate of 2+ gallons per hour. If the driver paid $16 dollars per hour, find the most economical speed 360 and the total cost for the trip.
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