Is n>15 an open circle of closed circle on graph point

Answer 1

In the context of graphing inequalities on a number line, the inequality n > 15 would be represented with an open circle at the point corresponding to 15. An open circle is used to indicate that the value at that point is not included in the solution set. In this case, it means that n is strictly greater than 15, but does not include the value of 15 itself.

If the inequality were n ≥ 15 (greater than or equal to 15), then you would use a closed circle at the point corresponding to 15 to indicate that 15 is included in the solution set.