The linear expression for a triangle with these lengths (7x+8),(6x+6) and (9x-4) that represents its perimeter is:

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

Find the solution of this system of equation -7x+y=-20 9x-3y=36

3x + 4y = 5 x- 3y = -7 solve by substitution