Answer: B
Explanation:
x ≤ 3, so it can't be C or D because those are both x being greater than three
Because x is less than or equal to 3, 3 is one of the solutions to this problem making B the answer
If you are stuck on a problem like this, find a random point and try it
Remember:
filled dot - less than/greater than, or equal to
Not filled dot - less than/greater than