Multiple-choice questions in College Board exam style. Each has four choices and a full explanation of why each option is right or wrong.
Memorize the MR = MC rule cold. It's the answer key to almost every profit-maximization question in this unit and the next two.
Know your shutdown and break-even reference prices. P vs. min AVC determines shutdown; P vs. min ATC determines profit, loss, or break-even.
Watch for "accounting" vs. "economic" profit language carefully. The exam often tests whether you remember that economic profit subtracts implicit costs too.
Read the explanations even when you got it right. Each one teaches a small fact that often returns in a different form on the exam.