5. Write the number 81 as a power with a base of 3 and a base of 9.
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Distance between two points, d, is given by
where: (x1, y1) = (8, 2) and (x2, y2) = (3, 8)
where: (x1, y1) = (8, 2) and (x2, y2) = (3, 8)