Answer:

Step-by-step explanation:
First, use distribution to simplify

Then, simplify further by combining like terms

Solve

Isolate x.
24x = 48 - 2y
Divide by 24.
x = 2 - y/12
The new coords are (-4, 4), (-1,7) and (1,1)
1 hour =$26, she has an hourly rate of 26 dollars