Answer: y2-y1/x2-x1=-1-3/3-3=-4/0=undefined. 
Step-by-step explanation:
 
        
             
        
        
        
It would be $39.95 for the Fast movers (bc they have unlimited mileage) and $38.70 for Speedy movers (including the extra miles added after 75) Please let me know if this helped, thanks.
        
             
        
        
        
A + (-5) = -12
First isolate your variable so move the -5 over (by adding 5 to both sides) 
Then you will have a = -12+5
Simplify and you get A= -7