Answer,
C
Step-by-step explanation:
I had the same question 2 days ago
To get the answer you have to add 29.4 and 13.9 and you get 43.3
It is A
I hope this helps you
1)
x= -2y
2. (-2y)+4y=0
0=0
2)
x+2x= -3
x=-1
y= -2
3)
7x+2x+2=4
9x=2
x=2/9
y=2/9+1
y=11/9