Johnny is making chicken parmesan. the recipe makes 8 servings, but he only needs 4 servings. if the recipe calls for 1 onion, how many onions will johnny need to make 4 servings?

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?