Colin has 18 pencils. How many kids (including Colin) can share these pencils evenly?

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?

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?