Paula is training to take part in a fun run for charity. paula weighed 65.5 kilograms before she started her training. she has lost 3500 grams.

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

I’m stuck on this equation, anyone got the answer?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.