explain the answer

ABM Class is trying to raise funds by selling premium burgers in a school during their Entrepreneurship. The variable cost to make each burger is P20.00 and it is being sold for P30.00 So far the organization has already shelled out P890.00 for the burger sale. a. Find the profit function P(x) where x represents the number of burgers sold? b. If 150 burgers were sold, how much is the total profit? c. How many burgers must be made and sold to break even? d. How many burgers should be sold to gain a profit of P350.00