15. • Solve the simultaneous equations x+3y=1
-x+y=3
A. 1 and 1
B.
1'and-2
2 and -2
D. 1 and 2
C.

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?