What’s the answer to this? (With work)

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

What is the equation and solution for the sentence? the sum of a number and thirty-one is one hundred thirteen. write the equation as n-31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and subtract 31 from both sides. the answer is 82. write the equation as n+31=113 and add 31 to both sides. the answer is 144. write the equation as n-31=113 and add 31 to both sides. the answer is 144.

1. what is the formula for finding the vertical distance between two points on a coordinate plane?