Add the number that would make the
expression a perfect square.
x² - 4x +
Helppp me

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.

Which rule describes the composition of transformations that maps △abc to △a”b”c