Answer:
A and E
Step-by-step explanation:
Plug 5 in for m in every equation, and see if the math works.
A.

A - works
B.

B - does not work
C.

C - does not work
D.

D - does not work
E.

E - works
5(2x+5y=16)+2(-5x-2y=2)
10x-10x+25y-4y=80+4
21y=84
y=4, making 2x+5y=16 become:
2x+5(4)=16
2x+20=16
2x=-4
x=-2
So the solution to the system of equations is the point (-2, 4)