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Write the interval in set-builder notation.
[-5, 1] U [9, ∞)
A. {x|-9 ≤ x ≤ 1 or x ≥ 5}
B. {x1-9 ≥ x ≥ 1 or x ≤ 5}
C. {xl-5 ≤ x ≤ 1 or x ≥ 9}
D. {xl-5 ≥ x ≥ 1 or x ≤ 9}
E. {x|x = 5 or x = 9}
Sagot :
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