Hi you can change the scientific notation to standard notation. Then go from there
        
             
        
        
        
Answer:
Rewrite in vertex form and use this form to find the vertex  
(h
,
k
)
.  (
2
,
−
9
)
 
        
             
        
        
        
Answer:
d
Step-by-step explanation:
i think
 
        
             
        
        
        
Answer:
which?
Step-by-step explanation:
there isn't any problem here shown