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.