I’m doing solving systems for my math class and one of the topics includes solving linear inequality systems graphically and I don’t know how to do any of this. HELP ME PLEASE

Find the value of the variable and the length of each secant segment

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.

Match each polynomial with its factorization.