Heya, the answer is A.
5x - 4 ≥ 12
Add 4 to both sides:
5x ≥ 16
Divide both sides by 5 to get x by itself:
x ≥ 16/5
You're going to do the same for the other problem.
12x + 5 ≤ -4
12x ≤ -9
x ≤ -3/4