Final answer:
The solution to the inequality |3x| >= _0 | is x <= 0 or x >= 0.
Step-by-step explanation:
The inequality |3x| >= _0 | can be solved by considering two cases: when x is positive and when x is negative.
When x is positive, the inequality simplifies to 3x >= 0, which means x >= 0.
When x is negative, the inequality simplifies to -3x >= 0, which means that x <= 0.
Therefore, the solution to the inequality |3x| >= _0 | is x <= 0 or x >= 0.