Each unit of a product can be made on either machine A or machine B. The nature of the machines makes their cost functions differ. Machine A: C(X) # 60 + 6 Machine B. C() = 140 + 9 Total cost is given by C(x,y) = C(x) + C(y). How many units should be made on each machine in order to minimize total costs if x + y = 14,520 units are required? The minimum total cost is achieved when units are produced on machine A and units are produced on machine B Simplify your answer.)