The answer is B, 
see explanation in the attached picture
 
        
        
        
Answer:
125
Step-by-step explanation:
add 21 and 34. with that you get 55. then subtract 180 from 55 then get 125
 
        
             
        
        
        
It would be 0.125 for the first answer
        
                    
             
        
        
        
Transaction 3 - $143
transaction 4 - $-86
transaction 5 - $86