1-5 A Inequalities and Their Solutions

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{x|x ≥ 2}

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[1, ∞)

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9 less than a number is at most that same number divided by 2.

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x ≤ 18

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Twice a number decreased by 5 is greater than or equal to the number plus 7.

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x ≥ 12

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{y|y < 5}

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(-∞, -3)