Find a formula for the described function. An open rectangular box with volume 7 m³ has a square base. Express the surface area SA (in m²) of the box as a function of the length of a side of the base x. SA(X) = m² State the domain of SA. (Enter your answer in interval notation.)

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A: As per bartleby guidelines we only give first question answers.  Please repost for other parts.

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