The demand for a new computer game can be modeled by p(x) =51 5 - 7 In x, for 0 s x 800, where p(x) is the price consumers will pay, in dollars, and x is the number of games sold, in thousands. Recall that total revenue is given by R(x) = x . p(x) Complete parts (a) through (c) below a) Find R(X) R(X) = b) Find the marginal revenue, R'(x) R' (X) = c) How many units will be sold if the price that consumers are willing to pay is $50? The number of units that will be sold is (Round to the nearest whole number as needed.)