What is a/b=c? i'm trying to get b by itself!

Find the solutions for a triangle with a =16, c =12, and b = 63º

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Ataxi company charges $2.25 for the first mile and then $0.20 per mile for each additional mile, or f = $2.25 + $0.20(m - 1) where f is the fare and m is the number of miles. if juan's taxi fare was $6.05, how many miles did he travel in the taxi? if juan's taxi fare was 7.65, how many miles did he travel in taxi