Answer:
He can grade 1.25 assignments in 1 minute.
Step-by-step explanation:
Because the teacher can grade 25 assignments in 20 minutes, we can dive 25 by 20 to get the constant rate.

So he can grade 1.25 assignments in 1 minute.
 
        
             
        
        
        
 Answer:
rational
Step-by-step explanation:
 
        
                    
             
        
        
        
Hello :
<span> x+2/3=9
x =9-2/3
(answer : </span><span>C)x=9 - 2/3</span>
        
                    
             
        
        
        
Answer:
50 1/6% (50 and one sixth) or $22.92
Step-by-step explanation: