Answer:
Step-by-step explanation:
0 - 130 = -130
-130+240 = 110
240 - 56 = 184
The change is 184 dollars
In the photo below.
I do not believe this is a function because the points on the graph are above each other on one line.
3x^3+13x^2-3x+7
I dont know if your question is complete.
f(x) - g(x)