3. Walmart Canada's revenue function is given by R(q) = -q3 + 30c}2 + 7631 and its cost function is given by C (q) = 3710 900q, where q is hundreds of units soldfproduce, while R(q) and C (q) are in total Canadian Dollars of revenue and cost, respectively Please show all the steps for each part. (20 points) a) Find a simplified expression for the marginal prot function. b) Find and interpret the R'(10) and C(23). C) Use Calculus to find the quantity that maximizes the prot. (1) Using Desmos graph the Cost and Revenue and Profit function and mark the maximum prot on the graph