Cost, revenue, and profit are in dollars and x is the number of units. Suppose that the total revenue function is given by R(x)=47x and that the total cost function is given by C(x)=90+28x+0.1x2 (a) Find P(100). P(100)= (b) Find the marginal profit function MP. MP= (c) Find MP at x=100. MP(100)= Explain what it predicts. At x=100,MP(100) predicts that cost will decrease by MP(100) dollars. At x=100,MP(100) predicts that profit will decrease by MP(100) dollars. At x=100,MP(100) predicts that profit will increase by MP(100) dollars. At x=100,MP(100) predicts that cost will increase by MP(100) dollars. Great! (d) Find P(101)P(100)