Ten subtracted from a number if the difference is 30 what was the orginal number

Mr.geswein takes off 2 points for not showing work for each problem. james didn't show work on 6 problems.how many points did he lose?

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

You work in a hospital that has 9 floors. you need to see 3 patients on each floor. how many patients do you need to see in all?