The table shows data from local cable companies, representing the number of channels offered x and monthly dollar cost of service y x y x squared x y 115 65 13 comma 225 7 comma 475 122 72 14 comma 884 8 comma 784 128 85 16 comma 384 10 comma 880 132 87 17 comma 424 11 comma 484 135 95 18 comma 225 12 comma 825 the sum from to of x is equal to 632 the sum from to of y is equal to 404 the sum from to of x squared is equal to 80 comma 142 the sum from to of x is equal to 51 comma 448 Which regression equation correctly models the data?