Alocal retail store sends its customers two types of coupons. one coupon is 20% off, and the other coupon is $5.00 off. for which dollar amount will the coupons result in the same discount?

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