Answer:
B.
C.
D.
Explanation:
If you plug in any value to both sides of the 3 equations, they'll always match. Take C. for example.
On the left side, we have: -19 times 1 plus 91=72
On the right side, we have: -19 times 1 plus 91=72
As you can see, the result is the same. This works with any x-value, not just 1.
