Answer:
B.
Explanation:
- 9 ≤ - 3x - 6 ≤ 6
1 part.
- 9 +6 ≤ - 3x - 6 +6
- 3/(- 3) ≤ - 3x/(- 3)
1 ≥ x
2d part
- 3x - 6 +6≤ 6 + 6
- 3x ≤ 12
- 3x/(-3) ≥ 12/(-3)
x ≥ - 4
x ≥ - 4 and x≤ 1
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