Determine an amount mathematically. verb.9 letters

Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure acb onto itself?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

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?