The numbers 0, 1, 2, 3, 4 could all be the missing digit because they're all numbers that round down. hope this helped!
 
        
                    
             
        
        
        
Answer:
300
Step-by-step explanation:
2*60 for 1 hr
120*2 to find two hrs
2*30 for 1/2 hr
add 
 
        
             
        
        
        
To get the center of the measurement, you. could use a ruler.
        
             
        
        
        
Answer:
The function operation is 0
The composite function is -1
Step-by-step explanation: