A Company determines that the marginal cost of producing x units of a particular commodity during a one-day operation is MC = 16x −1951, where the production cost is in dollar. The selling price of a commodity is fixed at $9 per unit and the fixed cost is $1800 per day. (i) Find the cost function. (ii) Find the revenue function. (iii)Find the profit function. (iv) Find the maximum profit that can be obtained in a one-day operation.