Interval Notation!! Help!?

Question

9: Solve and write in interval notation: | 2 - x | < -4
(-∞, -2) U (6, ∞)
No Solution
(-2, 6)
(-∞, ∞)


10: Solve and write in interval notation: | 3x + 4 | > -7
No Solution
(-∞, -11/3) U (1, ∞)
(-∞, ∞)
(-11/3, 1)


11: Solve and write in interval notation: | 4 - 2x | < 6
(-∞, -5) U (1, ∞)
(-∞, -1) U (5, ∞)
(-5, 1)
(-1, 5)


12: Solve and write in interval notation: | x/3 + 1/4 | > 1/2
(-9/4, 3/4)
(-∞, -9/4) U (3/4, ∞)
(-∞, ∞)
No Solution

Answer 1

Check out:

http://id.mind.net/~zona/mmts/miscellaneousMath/intervalNotation/intervalNotation.html

It has a really great explanation of how to solve these problems.