Which equations would you use the subtraction property of equality to solve? check all thap apply

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?

Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.