Answer:
x < 4
Step-by-step explanation:
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
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.
