Round each coin weight to the nearest gram first, penny 3g, nickel 5g, dime 2g, quarter 6g, half dollar 11g. Now add those numbers together as he has one of each coin 3+5+2+6+11=27 grams
        
             
        
        
        
Answer:
Graph
Step-by-step explanation:
 
        
                    
             
        
        
        
-2x and 4x
and x2 so tats it
        
             
        
        
        
Answer:
 the sequence is going up by 18