53. Incorrect. The answer is true, not false. At P* = 8, Q* = 17-1/2*P = 17-1/2*8 = 13.  Therefore,

CS = òo13P(Q)dQ - Q*P* =  ò o13 (34-2Q)dQ - 8*13 =[34Q-Q2]  - 104 = (34*13 - 132) - 0 - 104 = 169.