I have a Geometry test that I need to pass tomorrow and I'm not ready. what do I do?

Let w = 4. enter > , < , or = to compare the expressions. 3w² + 1 10w + 8

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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?