Which relation is a function? Choose one of the four options

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?

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

Lydia collected two sets of data one set of data shows an outlier. which set has an outlier, and which number is the outlier?