Interval.....?

Question

6: Solve and write in interval notation: | x | – 2 < 7
(-9, 9)
(-∞, -5) U (9, ∞)
(-5, 9)
(-∞, 9) U (9, ∞)


7: Solve and write in interval notation: | 3x | + 5 > 14
(-∞, -19/3) U (3, ∞)
(-∞, -3) U (3, ∞)
(-3, 3)
(-19/3, 3)


8: Solve and write in interval notation: | 2x – 4 | ≤ 12
[-4, 8]
(-∞, -4] U [8, ∞)
[-8, 8]
(-∞, -8] U [8, ∞)

Answer 1

I don't understand!!! I didn't learn this before!!!
~Sorry!!!