The only rule to follow is 
 Divide dividend by divisor and the mention the quotient and things left after remains in place of remainder
Here is a sample 

 
        
             
        
        
        
Answer:
exercising
Step-by-step explanation:
 
        
             
        
        
        
Answer:
42.5m/s
Step-by-step explanation:
Divide by 40
 
        
             
        
        
        
g(x) cannot have an inverse because it gives the same output value for two individual input values.
In this case, g(x) is 5 when x is both 3 and -1. Hence, g(x) does not have an inverse.
Let me know if you have any questions, thanks!