4. A monthly magazine, The New Edition, has fixed the cost of $2,500 and a production cost of $8 for each copy printed. The magazine sells for $24 per copy. (a) Find the cost function, C. (2 marks) (b) Find the profit function, P. (4 marks) (c) Compute the profit (or loss), results of selling 300 copies of The New Edition. (4 marks) (d) Find the number of copies should be printed if they wish to make a profit of $33,500. (4 marks)