* Supply-Demand ** Demand - Law of Demand ** Shock equilibrium ** Factors that influence supply-demand ** Taxes - applying to S-D *** Solve tax problem * Elasticity ** Demand ** Supply ** Income ** Cross-Price ** Know formulas for, meanings of ** Relationship of demand elasticity to revenue *** R'(p)= q (1 - \abs{\epsilon}}) * Consumer behavior ** Budget constraint *** goods, goods/leisure ** Preferences / utility *** complements (Leontief) *** perfect substitutes ** Optimization *** Interior MRS = MRT *** perfect complements/substitutes ** Income and substitution effects *** Substitution effects always negative (opposite direction of price change) *** Income effects can be in same or opposite direction **** Leads to normal/inferior goods ** CPI: biases * Taxes ** Specific taxes - change price of goods *** Applied at seller: demand price = p, seller price = p-t **** p_d - p_s = t **** supply curve shifts upward by t **** government revenue is t * q* = t * new equilibrium quantity *** Applied at consumer: demand price = p+t, seller price = p **** Less common * Labor supply ** Leisure and consumption are two goods: budget constraint *** x axis is leisure, intercept at 24,0 *** y axis is consumption, intercept at 0,24W/P *** slope of budget constraint is -W/P **** W = wage; P = price of consumption; L = leisure ** Utility function in terms of leisure and consumption ** Convert to leisure, solve for demand function, convert back to labor supply.