Factor the polynomial expression 16y^4-256x^12

Show me how you find the value of each variable and determine what the value of each variable is you i appreciate it : )

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

Which statement about the graph of y = 8(0.25)^2