So, Jerome bought a total of 80 cards (8x10) out of which he gave out 30 cards (3x10) so he has 50 cards left. (80-30)
        
                    
             
        
        
        
Answer:
0,4,7
Step-by-step explanation:
you take the input number like 8 subtract it by 4 to get the output
 
        
                    
             
        
        
        
Answer:
3/7 
Step-by-step explanation:
18/42=9/21=3/7 answer 
 
        
                    
             
        
        
        
You havent added the options