4. Let's analyze the cost functions of Firms A and B:baggod 9082 wishesodds Thatleft, 12 (a) Firm A has production function q - K? Lz. Suppose that r = 30 and w = 10, where r and noqufew are the prices of capital (K) and labor (L), respectively. In addition to these inputs, Firm 101 boo A also has another variable cost of 12 for each unit it produces. In the short-run, capital is oil (fixed at K = 5. vino you bus noquoo tog ebios sel Of simil .o.1) wino seir bad itsmori. What's firm A's short-run cost function? (You should write cost as a function only of the level of production, q) Denil togbad s'econull bus dist warb of wols (eintog S) CA(q) = Julogo add Isles flow as exxs Yodf bus X ers afosarotmis (2 points) (b) Suppose Firm B has cost function C'B = q3 - q2 + 10q + 50. i. What's Firm B's Marginal Cost function? MCB = (1 point) ii. What level of production minimizes Firm B's average variable cost? (1 point) OY ce's monopoly laces market demand given by Q2 - 220 -2P. The