9780133403879_TestBank_ch1.doc 9780133403879_TestBank_ch1.doc administrator Test Bank: Microeconomics: Principles, Applications, and Tools, 8/E, O’Sullivan, Sheffrin, Perez, ISBN-10: 0132948869, ISBN-13: 9780132948869, ISBN-10: 0132975475, ISBN-13: 9780132975476, ISBN-10: 0133403874, ISBN-13: 9780133403879