Which of the following is not a rational number?

Help please

Which point on the x-axis lies on the line that passes through point c and is parallel to lino ab?

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?

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school