SmartScore 99

SmartScore 86

SmartScore 92

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babybats

Use interval notation to represent the set of numbers: 1 ≤ x < 20 or x > 30 a. [1, 20) or (-∞, 30) b. [1, 20) or (20, 30) c. [1, 20) or (30, ∞) d. [1, 30)

IS C

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