Which graph shows exponential decay?

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

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

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.