Suppose that the demand and supply functions for good x are given as follows: Of = 240-2P, + 1 -P, and Q* = -30+ P. - 2t +s-2f where Px denotes the price of good x, P, denotes the price of a related product y. I denotes income, t denotes tax firms face, s denotes subsidy and f denotes factor prices. Suppose also that exogenous variables are given as follows: Income (1) = 450. Price of the related product (P. ) = 30, tax (t) =24, subsidy (s)=15 and factor prices (f)=36. What is the optimal price of the firm that maximizes revenue