I think I'd be the $40 she charges every hour she works. If this is multiple choice mind drop-in the options
Answer:

Step-by-step explanation:
Isolate the variable by doing operations to both sides of the equation.
The work is shown below:

I would say D because 15 to -9 would be going down 24.
Answer:

Step-by-step explanation:
I believe this is the correct answer. In order to check that my equations are correct I put in some dummy numbers.
a= 2
b=4
c= 