Which expression(s) is (are) equivalent to y4 – 625? Select ALL that apply.
((7-5)(y+5))2
(y2 – 25)
(y2 – 25)(y2 + 25)
o (y – 5)(y + 5)(y2 – 25)
(y – 5)(y + 5)(y² + 25)

Amonument at a park is in the shape of a right square pyramid. a diagram of the pyramid and its net are shown. what is the surface area of the monument? enter the answer in the box. m²

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

3x = 729 solve for x plz . it's urgent. will mark