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Question 3 A. Find the equation of a line which is parallel to the line 3y 9x + 15 = 0 and passes through the point (2, 4). (5 marks) A manufacturer can sell a certain product for $110 per unit. Total cost consists of xed overhead costs of $7, 500 plus production costs of $60 per unit. Find: i. the revenue function and cost function (4 marks) ii. the prot function (3 marks) iii. prot or loss when 100 units are sold (2 marks) iv. the number of units that must be sold for the company to break even (3 marks) v. the number of units that must be sold to make a prot of $4= 500 (3 marks) (Total 20 marks)