Acircle has a diameter with endpoints of (-3, 8) and (7, 4). what is the center of the circle?

(10, 12)
(5, 12)
(2, 6)

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96