A truck has a minimum speed of 8 mph in high gear When traveling a mph the truck burns diesel fuel at the rate of gal mile 0 0040295 900 T 42 Assuming that the truck can not be driven over 63 mph and that diesel fuel costs 1 69 a gallon find the following a The steady speed that will minimize the cost of the fuel for a 650 mile trip H 1 b The steady speed that will minimize the total cost of a 650 mile trip if the driver is paid 13 an hour c The steady speed that will minimize the total cost of a 450 mile trip if the driver is paid 24 an hour