To check whether p = 6 is a solution of the inequality p + 5 ≤ 12, we substitute p = 6 into the inequality and see if the inequality is true or false.
p + 5 ≤ 12
6 + 5 ≤ 12
11 ≤ 12
Since 11 is less than or equal to 12, the inequality is true when p = 6. Therefore, p = 6 is a solution of the inequality p + 5 ≤ 12