Answer:
2x^2-12x-54
Step-by-step explanation:
First 2x times x along with 2x times -9
Second 6 times x  along with 6 times -9
2x^2-18x+6x-54
=2x^2-12x-54
 
        
             
        
        
        
Answer:
6400
Step-by-step explanation:
 
        
                    
             
        
        
        
B because the table shows of stories and height
 
        
             
        
        
        
Answer:
c = 154°
Step-by-step explanation:
I Hope this helps.