Someone please help me with this I’ll mark u as brainliest + 15 pts

Which problem could be  solved  by evaluating the expression  7×(−3)7×-3?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

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