Answer:
1) B
2) D
3) A
4) B
Explanation:
We use a closed/filled in dot in math to represent an inequality where we have ≤ or ≥ and an open dot when its < or >. This is to represent that from the inequality we are also including the = component of the inequality.
After you know this, its pretty simple to work out which way the numbers go on the number line when its greater or less than depending on the question