Marginal Revenus of a Commuter Air Service Williams Commuter Air Service realizes a monthly revenue represented by the following function, where R(x) is measured in dollars and the price charged per passenger is x dollars. R(x) = 6,000x - 100x2 (a) Find the marginal revenue R'(x). R' ( X ) = X (b) Compute the following values. R'(29) = R'(30) = R'(31) = (c) Based on the results of part (b), what price (in dollars) should the airline charge in order to maximize their revenue? $