In kaylas class some of the students are wearing blue shirts 6/8 of the students are not wearing blue shirts what fraction of the students are wearing blue shirts

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)