How could you model 5 students sharing 4 bags of popcorn equally? how much will each student get?

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?

Simplify the expression 10/11(22z) + (a+5) -1

Is this a polynomial function? i need to know asap