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elasticity of demand/supply - ✔✔Ed=(change in q/ change in p)(p/q)
total revenue - ✔✔TR=PQ
Income elasticity - ✔✔Ei=(change in q/change in I)(I/Q)
cross-price elasticity of demand/supply - ✔✔Ecp=% change in q demanded of good x/
% change in price of good y
Consumer surplus - ✔✔C.S.=demand1-demand P equilibrium) Q equilibrium/2
producer surplus - ✔✔P.S.=supply P equilibrium-supply1)Q equilibrium/2
total surplus - ✔✔TS=CS+PS
deadweight loss - ✔✔change in PS+ change in CS + change in gov funds
change in D+ change in P/2
cost to government - ✔✔PQ
marginal utility - ✔✔MU=change in total utility/change in consumption
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