Step-by-step explanation:








 
        
             
        
        
        
The answer is 8/3 or 2 2/3 for the first one.
        
             
        
        
        
Step-by-step explanation:
Solving like terms 
-4x - 7x - 2y -8y
-11x - 10y
 
        
             
        
        
        
Answer:
The quotient of 4 and 9 raised to the power of r.
Step-by-step explanation:
 
        
             
        
        
        
11 is b because the bottom needs to be 5 to dived the amount by 5 minutes and the top is the amount of words she types in 5 minutes