Hi! I need help with these ratio questions! Please help me!

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 value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Which of the following is best modeled using a linear equation y=ax+b, where a is less than 0?