I'm not really understanding this as much someone

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?

What is the radical expression that is equivalent to the expression 27 1 over 5?

Is there an x intercept in the equation 60*1.15^x