Calculate the residuals for your scatterplot. pls help

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

How do you convert 1.27 to a percentage