Question

Solve |x+4|≥3. Write your answer in interval notation.

Answer 1

to have \[\left| x+4 \right|\ge3\]

Answer 2

x + 4 should be greater than 3 or 4 x must be less than -3

Answer 3

x + 4 should be greater than 3 or x + 4 should be less than -3

Answer 4

so the solution is \[x \in [-1,+infinite[ or x \in ]-infinite,-7]\]