Which of the following circles have their centers on the x-axis?
Check all that apply.
) A. (x-0)2 + (y - 3)2 = 23
B. (x - 2)2 + (y + 3)2 = 2
C. (x-4)2 + (1-0)2 = 74
D. (X-0)2 + (y-0)2 = 72

The first few steps in solving the quadratic equation 9x2 + 49x = 22 ? 5x by completing the square are shown. 9x2 + 49x = 22 ? 5x 9x2 + 54x = 22 9(x2 + 6x) = 22 which is the best step to do next to solve the equation by completing the square? 9(x2 + 6x + 3) = 25 9(x2 + 6x + 3) = 49 9(x2 + 6x + 9) = 31 9(x2 + 6x + 9) = 103