Answer:
2/8 = 1/4 = 0.25
Step-by-step explanation:
 
        
                    
             
        
        
        
I would think that it would be the 3:8 one because if you do the math, 8-3 is 5 and 12-5 is 7. The only reason Im doing it this way is because its the only way I can set it up. 
so you have more of a difference with the 12:5 one and less of a difference with the 3:8.
I hope I helped a bit
 
        
             
        
        
        
Answer:
(3,29)
Step-by-step explanation:
=-3(x2-6x)+2
=-3(x2-6x+9)+2+27
=-3(x-3)2+29,so the vertex will be (3,29)
 
        
                    
             
        
        
        
X=8 because add 11 to both sides and it becomes 28=3.5x and divide both sides by 3.5 so x=8