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AP Economics Review: Equations Flashcards

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168457117optimal decision-makingMB=MC0
168457118Opportunity cost from a PPCGood X: slope of PPC Good Y: Inverse slope of PPC1
168457119Market EquilibriumQd=Qs2
168457120SurplusQs-Qd3
168457121Total WelfareConsumer surplus+Producer surplus4
168457122Price elasticity of demandEd=(%∆ in quantity demanded of good X)(%∆ in price of good X)5
168457123Percentage change%∆=100 x (new value-old value)/old value6
168457124Total revenueprice x quantity demanded7
168457125Income elasticityE1=(%∆ Qd good X)/(%∆ income)8
168457126Cross-price elasticityEx,y=(%∆ Qd good X)/(%∆ price good Y)9
168457127Price Elasticity of SupplyEs=(%∆ in quantity supplied of good X)/(%∆ in the price of good X)10
169037175Marginal UtilityMU=∆TU/∆Q11
169037176Utility Maximizing RuleMUx/Px=MUy/Py12
169037177Accounting ProfitTR-explicit costs13
169037178Economic ProfitTR-explicit costs-implicit costs14
169037179Marginal Product of LaborMP=∆ in TP/∆ in labor15
169037180Average Product of LaborAP=TP/L16
169037181Total CostsTC=TVC+TFC17
169037182Marginal CostsMC=∆TVC/∆Q18
169037183Average Fixed CostAFC=TFC/Q19
169044692Average Variable CostAVC=TVC/Q20
169044693Average Total CostATC=TC/Q=AFC+AVC21
169044694Marginal Cost and Marginal Product of LaborMC=w/MP22
169044695Average Variable Cost and Average Product of LaborAVC=w/AP23
169044696Profit Maximization PointMB=MC or MR=MC24
169044697Demand for Firm's Product (Perfectly Competitive Market)MR=D=AR=P25
169044698ProfitTR-TC26
169044699Break-Even PointP=ATC27
169044700Shutdown PointP28
169044701Allocative EfficiencyProduct output q where P=MR=MC29
169044702Excess Capcity in Monopolistic CompetitionQatc-Qmc30
169044703Perfectly Competitive Long-Run EquilibriumMR=D=AR=P=MC=ATC31
169044704Monopoly Long-Run EquilibriumPm>MR=MC32
169044705Marginal Revenue Product∆TR/∆ # of Resources33

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