Find the center and radius of the circle with equation

(x+4)2+(y−5)2=12

Center(4,−5), Radius 12

Center(4,−5), Radius23–√

Center(−4,5), Radius23–√

Center(−4,5), Radius 12

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.