F(x)=4/5x-4 inverse function with steps

Shryia read a 481 -page-long book cover to cover in a single session, at a constant rate. after reading for 1.5 hours, she had 403 pages left to read. how fast was shryia reading? pages per hour how long did it take her to read the entire book? hours plz i realy need this

The center of the circumscribed circle lies on line segment and the longest side of the triangle is equal to the of the circle.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*