Help i'm doing math i have 10 minutes! :/

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

Which of the following points is collinear with (-2,1) and (0,3)