Answer:
x < 4
Explanation:
The graph shows an open circle so it is less than rather than less than or equal too. Also the blue line is facing the left so x must be less than 4.
Open circle (not filled in) means that the number it is on (in this case 4) is excluded. The arrow moving to the left means that x is anything less than 4. Therefore the answer is: x < 4
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