1) x<3 a) (–∞,3) b) (-3,3) c) (-1,1) d) (0,3) 2) x≥–7 a) (-7,7) b) [–7,∞) c) (7,-7) d) (0,7) 3) −1<x≤5−1<x≤5 a) (1,-5) b) (-5,1) c) (–1,5] d) (1,5) 4) x<0x<0 a) (–∞,+∞) b) (–∞,0) c) (–∞,1) d) (0,-∞) 5) 2≤x≤6 a) [2,6] b) (–∞,6) c) (6,-2) d) (-2,6) 6) x≥1 a) (-∞,1) b) (-1,∞) c) (∞,1) d) [1,∞) 7) –10<x<0 a) (10,0) b) (–10,0) c) (0,10) d) (-∞,0) 8) x>1/2​ a) (1/2,∞) b) (2/1,∞) c) (-∞,0,5) d) (1/2,-∞) 9) ∣x∣<4 a) (4,-4) b) (–4,4) c) (-4,0) d) (0,-4) 10) x=0 a) (–∞,0)∪(0,∞) b) (∞,0)∪(0,-∞) c) (–∞,+∞)∪(0,∞) d) (-∞,+∞)

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