Plzzz help really need it don’t understand

Average salary for a medical assistant is $31,220 which is a 20% income tax bracket how much money would they pay in income tax?

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

If y varies directly as x2 and y=6 when x=6, find the constant of variation.