On a graph with two or more different lines representing the two or more different equations in a system of equations, the solution to the system of equations is the point at which the different lines intersect.
Hope this helps!
I'm not sure what the question is but I think your asking 150-85=65
Divide 1,520 by the number of day in the week which is 7. That should give you how much she earns per week.
