Answer:
hahahahahahahahahahhahahahahhahahahahhahagagagaggagagagahhahahahahha
 
        
             
        
        
        
Your speed is 13 ft/sec.  In order to know our velocity, we would need to know what direction we're moving.  You haven't told us anything about our direction, only that our speed is 13 ft/sec.
        
             
        
        
        
Answer: 5, -5
Step-by-step explanation:
There are only 2 square roots of 25: plus and minus 5.
 
        
             
        
        
        
Answer:
   (4, 1)
Step-by-step explanation:
Since the first reflection is over the vertical line x=-3, the y-coordinate remains the same. The x-coordinate of A' will make the point (-3, 4) on the line of reflection be the midpoint between A and A':
   (-3, 4) = (A +A')/2
   2(-3, 4) -A = A' = (-6-(-7), 8 -4) = (1, 4)
The reflection over the line y=x simply interchanges the two coordinate values:
   A'' = (4, 1)