I want the steps and the final answers for this page

3. Suppose the demand function for x units of a certain product is p=100+ Ing . 9 21, where p is in dollars. Suppose further that the cost function in dollars for q units of this product is C(q) =100g +100 a) Find the marginal revenue function. (Recall that revenue equals quantity times price.) b) Use calculus to approximate the revenue from the sale of 9th unit. c) Find the marginal profit function. d) Use calculus to approximate the profit from one more unit when 8 units are sold. 4. Assume that the total revenue (in dollars) from the sale of x television sets is given by R(x) = 24(x7 +x) a) Find the marginal revenue function, R'(x) b) Find and interpret R'(100), R'(200), and R'(300)