This was 4 days ago!!!!!!
        
             
        
        
        
9514 1404 393
Answer:
   81 m
Step-by-step explanation:
Since x is seconds after takeoff, the value of x at takeoff is 0. You are being asked to find H(0).
   H(0) = -3(0 -3)^2 +108 = -3(9) +108 = 81
The height of the hovercraft at the time of takeoff is 81 meters.
 
        
             
        
        
        
Answer:
11. 
12. 
13. 
14. 
15. 
16. 
17. 
18. 
Step-by-step explanation:
In all of them you just subtract the bottom exponent from the top exponent. 
 
        
                    
             
        
        
        
The equation would be 8x +3 + -19. Substitute your given answers in. Your answer would be B. Negative 2
        
                    
             
        
        
        
It would be 1000 x 6 
 so the answer would be 6000.
hope this helped but plz help me out and put this answer as brainliest plz