Free. points. (100 to be exact)

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 equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Anyone know? is appreciated! will mark brainliest if correct!