From the list of 9 weights we see that 
Puppies in range 10-11 = 3
range 12-13 = 4
range 14-15 =  2
The second histogram described is the correct one.
 
        
             
        
        
        
(7,-1) 
comment if u want me to explain the answer
        
             
        
        
        
Answer:
4/3
Step-by-step explanation:
You use Rise over Run.
It <em>runs</em> 3 blocks to the left (+).
It <em>rises</em> 4 blocks up (+).
 
        
                    
             
        
        
        
8n+3+9n+7=180
17n+10=180
17n=170
Answer
N=10