Can any one help ? Please can some one help m please help me

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.

Write 17/20 as a decimal and as a percent.

Describe the domain and range of y=2(3)^x-2+5