Answer:

Step-by-step explanation:

Step 1) Replace y = f(x)

Step 2) Exchange x and y

Step 3) Solve for y

Subtracting both sides by -5


Dividing both sides by 2

Step 4) Replace 

This question is incomplete , l can’t answer it . You have to say how much minutes or hours they work to get paid $40 ,if you just say that John’s work one hour and Mike work 1.5 hours then I don’t know what to solve ,this question is a complete
Answer:
System A the answer is: One solution
System B the answer is: Many infinite solution
System C the answer is: No solution
Step-by-step explanation:
Hope this helps you :)