Answer:
t represents the number of seconds after the rocket is released
 
        
                    
             
        
        
        
Answer:
Im not sure but i believe it is A. 5
Step-by-step explanation:
Hope this helps please mark brainlist if im right. 
 
        
                    
             
        
        
        
For this case we have that the main function is given by:

 We apply the following transformation:
 Vertical displacements:
 Assume k> 0
 To graph y = f (x) - k, move the graph k units down.
 For k = 3 we have:
 
 Answer:
 when the function is changed to f (x) - 3 the change that will occur is:
 Vertical displacement 3 units down.