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Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x