1.)
Velocity is in m/s, and acceleration is in m/s^2 like you said. Because of this, we can calculate this by dividing the speed by the time it took to get to that speed.
(20 meters/second) / 10 seconds = 2 meters/ second^2
2.)
Same thing with the first one.
(100 meters/second) / 4 seconds = 25 meters / seconds^2
 
        
             
        
        
        
The third piece is 59 cm long. 
Add the first two pieces up. 7+34= 41. Since the whole stick is 100 cm long, subtract 41 from 100 to find the length of the third piece. 100-41=59. 
        
                    
             
        
        
        
Hello There!
It is $60
Hope This Helps You!
Good Luck :) 
- Hannah ❤
        
                    
             
        
        
        
Answer: C y=1/3x
Step-by-step explanation:
All Y-values in the table are 1/3 of the corresponding X-value. To check: 3/1=1, 6/3=2, 9/3=3 
 
        
                    
             
        
        
        
I just did the second one, the one that looks this a side ways L,
here are the points 
(4,4). (5,4). (3,1). (3,2). (4,2). hope this helped