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Linear Algebra With Applications
Students are buying books for the new semester. Eddie buys the environmental statistics book and the set theory book for $$\$ 178$$. Leah, who is buying books for herself and her friend, spends $$\$ 319$$ on two environmental statistics books, one set theory book, and one educational psychology book. Mehmet buys the educational psychology book and the set theory book for $$\$ 147$$ in total. How much does each book cost?