A firm has two production functions: Q = min{K, L} and Q = K + L. The firm faces a wage of w = 8 and cost of capital r = 8. To produce Q = 40 under the first function, the minimum cost is achieved by setting K = L = 40. If wages fall to w = 4 while keeping total cost the same, output of Q = 80 can be produced using K = L = 40. Under the second function, output is equal to the sum of capital and labor, so the solutions to parts (a) and (b) would change.