0=+20 I don't know how to answer this so please help me. Solve the equation

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 many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

Which representation has a constant of variation of -2.5