Therefore? What needs to be solved?
        
                    
             
        
        
        
Answer:
3 trops
11 bops
Step-by-step explanation:
3×3=9
11×2=22
22+9=31
 
        
             
        
        
        
I don't really know how to explain, but I will give you the straight up answer
5 HARDCOVER BOOKS (would total up to $20)
3            paperback books (would total up to $6)
        
             
        
        
        
Answer:
11
Step-by-step explanation:
42 + 39= 81 and you need to get to 180 so the 3rd angle would be 99 so 99 dived by 9 is 11 so x=11