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. x² Machine A: C(x) = 10+ 6 13 Machine B: cly) = 160+ 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=12,210 units are required? The minimum total cost is achieved when units are produced on machine A and units are produced on machine B.