What goes in the place of the “?” I don’t know how to do this

Nnnnneeedd 1.find the residual if you know the actual number is 5.2 and the predicted value is 4.8

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36

Pls! does anybody know a shortcut for answering these types of questions in the future?