This is accounting plz help

Can somebody me out with this question

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

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?