183. "Rules" of profit maximisation

The “rules” referred to in the question “The goal of any firm is to maximise profit, discus the two rules of profit maximisation for a firm (15 marks)” Are: Where MR intersects MC (MR-=MC) in the supply curve of the firm. And the “shut down” (or close down point) – where MC intersects the AVC (average variable cost). If you need further explanation – talk to me.