-2 <= x +4 < 9

[math_celebrity]

-2 <= x +4 < 9

Subtract 4 from each piece:
-2 - 4 <= x < 5

Simplify:
-6 <= x < 5

To find the interval notation, we set up our notation:

• The left side has a solid bracket, since we have an equal sign:
• The right side has an open parentheses, since we have no equal sign
• [-6, 5)