x ≤ -5
1) As we have the key, we can write the following inequality, 4 bars labeled as x, 12 little squares, and 8 gray squares. So we can write:
4x + 12 ≤ -8 Subtract 12 from both sides of that inequality
4x ≤-8 -12
4x ≤ -20 Divide both sides by 4
x ≤ -5
2) Hence, the solution is x ≤ -5
