I am not entirely sure what your asking but i think you mean which will coast the least and that would be 8 since it’s the smallest amount
        
             
        
        
        
Answer:
Prefer the attachment for ur ans.
 
        
             
        
        
        
Answer and Step-by-step explanation

2, -4, 6, -8, 10, -12, 14, -16
These are the next three numbers in the pattern :-12, 14, -16