| 1. 2, -2 | 5. All R | 9. -5 < x < 2 |
| 2. -3 < x < 3 | 6. 1 | 10.  |
| 3. Æ | 7. -2 < x < 6 | 11. x = -1, x =  |
| 4. Æ | 8. x < -7 or x > 3 | 12. x = -7, x = 1 |
MATH 121
ABSOLUTE VALUE
1. ½x½ = 2
2. ½x½ < 3
3. ½x½ = -1
4. ½x½ < -1
5. ½x½ > -1
6. ½x - 1½ < 0
7. ½x - 2½ < 4
8. ½x + 2½ > 5
9. ½2x + 3½ < 7
10. ½4x - 9½ < 8
11. ½3x - 2½ = 5
12. ½x + 3½ = 4
ANSWERS:
| 1. 2, -2 | 5. All R | 9. -5 < x < 2 |
| 2. -3 < x < 3 | 6. 1 | 10. |
| 3. Æ | 7. -2 < x < 6 | 11. x = -1, x = |
| 4. Æ | 8. x < -7 or x > 3 | 12. x = -7, x = 1 |
121ABVAL.HDT