Seventy-eight is 26% of what number?

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

Pranza plotted point a in the coordinate plane below.

What are the values of each variable in the diagram below?