The total cost (in dollars) of producing a: golf clubs per day is given by the formula C(zv) = 500 + 60:1: 0.33:2. (A) Find the marginal cost at a production level of a: golf clubs. C'(a:) = f, (B) Find the marginal cost of producing 60 golf clubs. Marginal cost for 60 clubs = i, A coalburning electrical generating plant emits sulfur dioxide into the surrounding air. The concentration C(32), in parts per million, is approximately given by the function 0.6 C(33) = y, where a: is the distance away from the plant in miles. The instantaneous rate of Change of the sulfur dioxide concentration: (A) 3 miles from the plant = f, (B) 12 miles from the plant = 9'. If a person learns 3/ items in 3: hours, as given by y = 16V3 3:2, nd the rate of learning for a person at the end of: (A) 2 hours: y; (B) 8 hours: it