Define Ray Average Cost as a function of q, given 1, 12: e TC(219, 129) RAC(q; 21, 12) = which is the average cost of producing q items with fixed proportions of each Ray Marginal Costs are: aTC(q1, q2) aTC(q1, q2) RMC(q; 21, 12) = 21 + 12 aq1 aq22. A printing press manufactures both books and posters in the ratio 1: 3. Its costs are TC(q1,q2) = 2900 + 0.2q, + 3q7 + 0.4q, where g, is the output of books and g, is the output of posters. o o0 oo Derive the press's Ray Average Cost. Derive its Minimum Efficient Scale (MES). What is its MES if it produces only books? What is its MES if it produces only posters