The equation of a circle is (x+4)2+(y−5)2=121. 1.) what is the center and radius of the circle? center: (−4, 5); radius: 11 center: (−4, 5); radius: 121 center: (−4, −5); radius: 121 center: (4, −5); radius: 11 2.) one of the lamp posts at a bank has a motion detector on it, and the equation (x+15)2+(y−12)2=25 describes the boundary within which motion can be sensed. what is the greatest distance, in feet, a person could be from the lamp and be detected? 5 ft 10 ft 50 ft 125 ft 3.) jenni plots her house and yard on a computer. she determines that the circle that defines the part of the front yard that gets watered by the sprinkler is (x−9)2+(y+11)2=16. what is the diameter, in meters, of the circular area that gets watered by the sprinkler? 4 m 8 m 16 m 32 m