Answer:
-8y-67
Step-by-step explanation:
-7(y+9)-(y+4) distribute 
-7y-63-y-4 combine like terms
-8y-67
i believe this is the right answer :D
 
        
             
        
        
        
Answer:
more than
Step-by-step explanation:
 
        
             
        
        
        
Hey there!! 
The given set is a function 
( x , y ) - this is the form in which we write co-ordinates 
In order to be a function , at least x values shall repeat. 
Noted down all the x values 
2 , -1, 4 , -2 
None of the values is repeating. 
Hence, the given data is a function 
Hope my answer helps!
 
        
             
        
        
        
Answer:
25 train routes
Step-by-step explanation:
The train routes go from 1-2, 2-3, 3-4, 4-5, ,and so on, but there is also one that goes from 25-1. If you notice, there when we get to 4-5, there are 4 train routes which means that if there are 25 towns, then there are 24 train routes, but since 25 and 1 are connected then there are 25 routes. Hope this helps!