Rate of change of cost. The fast-food restaurant in Problem 63 can produce an order of fries for $0.80. If the restaurant s daily sales are increasing at the rate of 45 orders of fries per day, how fast is its daily cost for fries increasing?
Problem 63
Rate of change of cost. A fast-food restaurant can produce a hamburger for $2.50. If the restaurant s daily sales are increasing at the rate of 30 hamburgers per day, how fast is its daily cost for hamburgers increasing?