Please solve

A company manufactures and sells DVD's. Here are the equations they use in connection with their business. Number of DVD's sold each day: n(x) = x Selling price for each DVD: p(x) = 11.5 - 0.07x Daily fixed costs: f(x) = 200 Daily variable costs: v(x) = 2x Find the following functions. a. Revenue = R(x) = the product of the number of DVD's sold each day and the selling price of each DVD. R(x = Preview b. Cost = C(x) = the sum of the fixed costs and the variable costs. C(x) = Preview c. Profit = P(x) = the difference between revenue and cost. P(x) = Preview d. Average cost = C (x) = the quotient of cost and the number of DVD's sold each day. C(x) = Preview