If a person falls asleep at 5:00 AM and wakes up at 12:00 AM how long did he sleep?

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.

Is it true or false i’m trying to pass this test so i can leave school

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?