What is the volume of the box if it is scaled down by a factor of 1/10? Height & Width: 5cm x in height x 8cm in width

Which graph represents an even function?

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?