If the temperature for the past 8 hours has been changing at a rate of -1.5 degrees each hour and it is currently 5 degrees the temperature 4 hours ago was

Given the following statements, which is the best

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?

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