C. Profit Maximization and BreakEven Main Idea: Every business wants to make a prot, but all businesses must at least make enough money to cover all the expenses. 1. Detail: When business owners think about protability, they must consider both cost and revenue from sales. 2. Detail: Prot-maximizing quantity of output is the level of production at which marginal cost is equal to marginal. 3. Detail: Every rm must reach its breakeven point, at which it has enough money from sales to cover all its operating costs. 4. Detail: Business, especially sales, conducted electronically over the is known as 5. Detail: With online selling, the fixed costs are very low, and the v point is also lower than it would be in a real store