Bilassan, MalakA and Sedra are in a square room with a perimeter of 40 feet. If they want to hang a curtain along one full side of the room, how long does the curtain need to be?

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

What function has a range {yly< 5}? question on picture above^

What is the area of a rectangle with vertices (-8,-2), (-3,-2), (-3,-6), and (-8,-6)? units