Answer:
Solution starts at 15.
Circle is closed.
Direction of shading is right.
Explanation:
x/3 ≥ 5
Multiply both sides by 3.
x ≥ 15
Since the inequality sign is ≥, "greater than or equal to", because of the "equal to" part, you use a closed circle on 15. Because of the "greater than" part, the right side is shaded and the arrow points to the right.