Multiple-choice questions in College Board exam style. Each has four choices and a full explanation of why each option is right or wrong.
Calculate, don't guess, on elasticity questions. When numbers are given, use the percentage change formula rather than relying on intuition.
Remember: the more inelastic side pays more of a tax. This single rule resolves most tax incidence questions.
Check whether a price control is binding. A ceiling above equilibrium or floor below equilibrium has no effect โ don't assume every control changes the market.
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.