PLEASE HELP ITS AN EMERGENCY Which equation represents a circle with a center at (2. -7) and a radius of 4 units?
(x-2)²+(y+7)²=4
(x + 2)2 + (y - 7)2 = 4
(x - 2)2 + (y + 7) = 16
(x + 2)2+(y-7)2 = 16
