Question

Which of the following circles have their centers on the x-axis?

Check all that apply.
A. (x - 0)2 + (y - 5)2 = 49
B. (x - 4)2 + (y - 0)2 = 22
C. (x - 0)2 + (y - 0)2 = 25
D. (x + 1)2 + (y - 7)2 = 16