littlechxchie littlechxchie 22-01-2020 Mathematics contestada 30 points Which expression is equivalent to | a | ≤ 4 ? 1. a ≥ –4 and a ≤ 4 2. a ≤ –4 or a ≥ 4 3. a ≤ –4 and a ≥ 4 4. a ≥ –4 or a ≤ 4
