Answer:
i think its -38
Step-by-step explanation:
 
        
             
        
        
        
9514 1404 393
Answer:
   the listed sequences have no common difference(s)
Step-by-step explanation:
The differences in the first sequence are ...
   8, 10, -1, 19
These values are not equal, so there is no common difference.
__
The differences in the second sequence are ...
   -3, 3, -3, 3
These values are not equal, so there is no common difference.
_____
The difference is the difference between a term value and the one before.
   1 -(-7) = 8
   3 -6 = -3
 
        
             
        
        
        
Is it number 21 you need help with?
        
                    
             
        
        
        
D. Intersecting lines and lines that have the same equation.
Hope this helps :)