I think its b but im not sure
        
                    
             
        
        
        
It would be 9.54x10^6 because the nine is 6 spaces away from the decimal point if you get what i mean.
        
                    
             
        
        
        
Answer:
f(x)=2(x-3) yup that's the answer
 
        
             
        
        
        
The reflection across y axis of (x,y) would be (-x,y)
thus the answer is b
Please take the above picture for reference
hope it helps!