Problem 1 At a price of $40 for a two-hour harbor tour, a water-tour company attracts 200 customers. For every $1 decrease in price, an additional 5 customers are attracted. The cost of carrying x customers in the tour is ('04:) = 3,000 + 5x + 0.01362. a) Find the demand function; express the price, p, as a function of x, the number of customers. b) Find the revenue function R(x). c) Find the marginal revenue function. (:1) Find the profit function. e) Find the marginal profit function