Pls help will mark brainliest 20 points

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?

The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase