A pure substance that is made of only one kind of atom is called an element. 
An element is a pure substance, which means it is made up of only ONE kind of atom. 
        
                    
             
        
        
        
Answer: 41.832
Step-by-step explanation: 
I like to write decimals without decimals when multiplying. for this I would do  
3486 x 12 which equals 41832 then You would move the decimal up from 3 spaces from the 2 from 41832 which would put the decimal between the 1 and 8 
 
        
             
        
        
        
18bags 
Look if 1=3 2=9 3= 18  so he uses 18 bags!
        
             
        
        
        
Answer:
Step-by-step explanation: