Measurements I suck at it​

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?

The table above shows approximate conversions from gallons to liters. what is the value of x?

How is the number of vertices for a prism related to the name of the prism