Answer:Whats the highest number each number can go up to before it rounds up? Its +4 as each number will round up otherwise. So if the rounded up numbers were 10,20,30,30. They can go up to 14,24,34,34. So its 106.please mark as brainliest 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Mean=16.5
Median=9.5
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: it increased by $403. He ended with $6603 
Step-by-step explanation: since he started off with $6200, you would move the decimal over two places (.065) and then multiply 6200 and .065 to get $403. 
 
        
             
        
        
        
Answer:
i think b
Step-by-step explanation: