Line b has a slope of 9/7 .Line c has a slope of 9/7. Are line b and line c parallel or perpendicular?

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 order of these fractions from least to greatest 2/3 7/10 5/8 65/100

98 point question what is the record for most points in one