How to do this question plz answer me step by step plzz plz

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?

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Find the domain and range of the following function f(x) = 51x - 21+ 4