Which graph represents the function below?

Plug it into a graphing calculator, I used Desmos. 

The graph is the same as x=-2 and y=-4. All I did was replace g(x) with y since y is the output function and so is g(x), then I just added the whole expression as follows and it graphed it for me. 

The bottom graph to the left is the answer.

I hope this helps!
~kaikers

Yes you do, so £1973.09 - £1473.50 = £499.59 so tim overpaid £499.59 .hope this ; )