Taxes create a "wedge," reducing efficiency and creating DWL.

This explains why the MC curve eventually goes up.

%ΔQ%ΔPthe fraction with numerator % cap delta cap Q and denominator % cap delta cap P end-fraction ). If the absolute value is >1is greater than 1 , it’s elastic.

Open the PDF to the Supply/Demand section. Read one page. Close the PDF. On a blank sheet of paper, draw the graph and write the three shifters. Repeat for every section.

A useful supplement, not a standalone course. Pair it with real past AP exams and graph drills for best results.

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