Hey guys, i want to ask, is it different between (x-6) and ( 6-x ). pls ASAP​

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

Can some one me with these questions

700 miles the train takes 5 hours to a travel the distance at what unit rate is the train traveling?