volume=b^2 *( b+3)
20=b^3+3b^2
I think I would graph this:
b^3+3b^2-20=0
I don't see an easy solution to the cubic equation.
At a glassware factory, molten cobalt glass is poured into molds to make paperweights. Each mold is a rectanglar prism whose height is 3 inches greater than the length of each side of the square base. A machine pours 20 cubic inches of liquid glass into each mold. What are the dimensions of the mold?
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