Here is our inequality.
[tex]x \geq -4[/tex]
Let's go from least to greatest, and add in infinity as our maximum.
[tex]-4 \leq x \ \textless \ \infty[/tex]
Our interval notation would look like this.
[tex][-4,\ \infty)[/tex]
We put the lower bound, then the higher bound, using brackets instead of parentheses if x can also be equal to that value.