(4x-5y) is subtracted from (-10x-y)

Hey am have account in but wished to create an account here you guys will me with my make new friends of uk !

Do you mind if you guys me with this question i’m on number 8

Barrett is comparing the membership fees for two museums. the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?