Class 15: Taxes, Subsidies, Administered Prices, and Quotas
Textbook reading: Kreps, Chapter 16, all of it. The formulas on pages 357, 358, and 361 are for checking, not for memorizing: every one of them is an area you can compute from the picture, and Q43 has you do both once so you see that they agree. Read Problems 16.7 and 16.8 (Freedonia) before class; Q45 is built on them.