What is the area of the shaded region on the graph shown?

How do i work this problem out using the equation a=pe^rt

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

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?