Answer: x≥-1 or x≤-5
Step-by-step explanation:
First, divide both sides by 4 to get rid of the 4:
4|x+3|≥8
|x+3|≥2
Next, we know that for |a|≥b, a≥b or a≤-b. Therefore:
x+3≥2 or x+3≤-2
x≥-1 x≤-5
