Atruck traveled at an average speed of 60 miles per hour for 5 hours and had a fuel consumption rate of 12 miles per hour gallon. approximately how many gallons of fuel did the truck use for the 5 hour trip?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min