Solve this for me

A. The total cost function for a monopolist is given by TC = 4,000 + 36Q + 0.06Q2 and the demand equation is Q = 1,440 - 12P per unit of output. i. What is the profit maximising level of output? (5 marks) ii. Calculate the profit maximizing price. (2 marks) iii. Calculate total profit at the profit maximising level of output. (3 marks) B. If in question A it were a perfectly competitive firm instead of a monopolist, what would be the equilibrium price and quantity? (5 marks) C. The total cost function for a perfectly competitive firm is estimated to be TC = 720 + 250Q - 6Q2 + 0.04Q3. The price of each device is $35. i. Should the owner close the outlet? Explain! (5 marks) D. Ital Shack is a local cook shop which produces packaged vegetarian meals for the health conscious. It retails its meal packages for $20 each. It has also estimated that by hiring additional cooks, it can produce the meals at the following rate. Number of Vegetarian meal packages produced and sold per Servers (L) day(Q)