Question 4 > Suppose the labor cost (in dollars) for manufacturing a particular product can be approximated by L(x, y) = - 8x - 4y - 2xy + 239 where I is the number of hours required by a skilled craftsperson and y is the number of hours required by a semiskilled person. What values of & and y will minimize cost and what is the minimum cost? Labor costs will be minimized when r = and y = The minimum labor cost will be S