C. The total cost function for a perfectly competitive firm is estimated to be TC = 96 + 18Q - 8Q2 + 0.125Q3. The price of each device is $25. i. Should the owner close the outlet? Explain! (4 marks) D. Given the information in the table about the demand for a certain product estimate: Quantity Price 221 19 302 10 i. the demand function (4 marks) ii. the demand curve (2 marks) iii. the revenue maximizing quantity (3 marks) iv. the revenue maximizing price (2 marks)