30000 is the answer I think
        
             
        
        
        
The answer is B
Because Mercury and the Sun are 60,000,00 miles apart and Mars is 200,000,000 miles away from the sun. Divide 200,000,000 and 60,000,000 and you will get 3.3 (Just round)
        
                    
             
        
        
        
B is going to be where A is
        
                    
             
        
        
        
5,600
8000*.10(y)
8000*.10(3)
8000*.3
5600