-2.5 < p - 3 points be open or closed
The inequality -2.5 < p - 3 can be rewritten as p > 0.5.
Since the inequality includes a strict inequality sign, the interval is open. So, the interval (0.5, ∞) is open.
Since the inequality includes a strict inequality sign, the interval is open. So, the interval (0.5, ∞) is open.