I need help ASAP im doing a quiz

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

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9

Explain how the quotient of powers was used to simplify this expression.