Answer:
C
Step-by-step explanation:
3 - [tex]\frac{x}{2}[/tex] ≥ 12 ( subtract 3 from both sides )
- [tex]\frac{x}{2}[/tex] ≥ 9 ( multiply both sides by 2 to clear the fraction )
- x ≥ 18
multiply both sides by - 1, reversing the symbol as a result of multiplying by a negative quantity
x ≤ - 18