The correct answer is the first option.
If you want to use elimination, you can sum the two equations for example, so that the x's simplify:



Plug this value for y in one of the equations to derive the value of x:

So, the solution is 
The answer would be 78. C
Answer:
An area or perimiter formula
Step-by-step explanation:
Answer:
It's going to be B and E because it's in the hundreds place not in the tens or whole