Help asap will give 40 points

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

Which graph represents an even function?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a