Geometry (Don't worry about the station)

15 Write the equation of a circle with a center of (1, - 5 and a radius of V5 . a ) ( x - 1 ) + ( y + 8 ) = 5 go to station 7 b) ( x + 1 ) + ( y - 8 ) = 5 go to station 3 c ) ( x + 1 ) 2 + ( y - 5 ) ? = 15 go to station 2 d) ( x - 1) + ( y + 5 ) ? = 15 go to station 6