SECTION 1-3 (graph)
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CHAPTER 4...none
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SECTION 5-2...none
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SECTION 5-5 (25-26)
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SECTION 5-5 (27-28)
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SECTION 5-5 (29-31)
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SECTION 6-1 (29-30)
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SECTION 6-1 (31-32)
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SECTION 9-5 inequalities...none
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