A company has a linear total cost function and has determined that over the next three months it can produce 10,000 units at a total cost of $4,50,000. This same manufacturer can produce 20,000 units at a total cost of $5,00,000. The selling price per unit is $6. a) Determine the revenue, cost and profit functions. b) Find the profit if 15,00000 units are produce. c) Find the break-even quantity. d) What is the break-even dollar volume of sales