Amilk container capacity is one gallon. how many cups would be equal?

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?

Factor this polynomial completely x^2-64

Can someone me with this problem i don't understand i need