Answer: Any x-values greater than 3
Explanation:

 
        
             
        
        
        
I think B
I am not sure tho
        
             
        
        
        
Unintentional injuries are those injuries that are not inflicted purposely and that occur without intent of harm. These unplanned events can include falls
        
             
        
        
        
Answer:
Velocity
Explanation:
Speed is how fast something moves.
Velocity is how fast it moves and in what direction it moves in.
Acceleration is the change in how fast it moves. I.e. if it speed up or slows down.
Here we are given the speed of the train (75mph) and the direction (north), therefore it is velocity.
Hope this helped!