Find the image of (2,-2) obtained by translating 2 units up followed by a rotation of 90

Aportion of a line bounded by two points is defined as

If m 17 27 90 63 ** picture is attached

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?