How many lines can be constructed through point P that are perpendicular to ab

The spotter on the ground is standing beneath the safety net. what is his distance from the base of the platform, to the nearest meter? 3 meters, 2 meters, 4 meters, 1 meter?

Given: and prove: what is the missing reason in the proof? given transitive property alternate interior angles theorem converse alternate interior angles theorem

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?