I need help with these questions

Find the average cost function if cost and revenue are given by C(x) = 172 + 5.2x and R(x) = 7x - 0.04x2 The average cost function is C(x) =] Find the marginal average cost function if cost and revenue are given by C(x) = 150 + 7.2x and R(x) = 3x - 0.01x2 The marginal average cost function is C'(x) = The total cost (in dollars) of producing x food processors is C(x) = 2100 + 90x - 0.3x2 A) Find the exact cost of producing the 61st food processor. (B) Use the marginal cost to approximate the cost of producing the 61st food processor. (A) The exact cost of producing the 61st food processor is $ The total cost (in dollars) of producing x food processors is C(x) = 2000 + 90x - 0.5x2 A) Find the exact cost of producing the 51st food processor. B) Use the marginal cost to approximate the cost of producing the 51st food processor. (A) The exact cost of producing the 51st food processor is s The price p (in dollars) and the demand x for a particular clock radio are related by the equation x = 5000 - 50p. (A) Express the price p in terms of the demand x, and find the domain of this function (B) Find the revenue R(x) from the sale of x clock radios. What is the domain of R? C) Find the marginal revenue at a production level of 2900 clock radios. (D) Interpret R'(3300) = - 32.00. (A) P = P(x) = The total cost and the total revenue (in dollars) for the production and sale of x ski jackets are given by C(x) = 28x + 10,650 and R(x) =200x -0.4x2 for 0 sx s 500. (A) (B) Find the value of x where the graph of R(x) has a horizontal tangent line. (C) Find the profit function P(x). (D) Find the value of x where the graph of P(x) has a horizontal tangent line. Graph C(x), R(x), and P(x) on the same coordinate system for 0 sx s 500. Find the break-even points. Find the x-intercepts of the graph of P(x). (A) R(x) has a horizontal tangent line at x = Let p = 24 - vx and C(x) = 426 + 5x, where x is the number of garden hoses that can be sold at a price of $p per unit and C(x) is the total cost (in dollars) of producing x garden hoses A) Express the revenue function in terms of x. B) Graph the cost function and the revenue function in the same viewing window for 0 s x s 576. Use approximation techniques to find the break-even points. (A) R(X) =