Answer:
D 13
Step-by-step explanation:
y = 3.5x -4
Let y=41.5
41.5 =3.5x -4
Add 4 to each side
41.5 +4=3.5x -4+4
45.5 = 3.5x
Divide each side by 3.5
45.5 /3.5 = 3.5x/3.5
13 =x
