14000+7x=35x (x being the number of books) solve for x and you have your answer. 14000=35x-7x=28x therefore x=14000/28=500 so he needs to sell 500 books before he breaks even.
        
             
        
        
        
I'm just guessing but maybe expressions
        
                    
             
        
        
        
Answer:
2√5
Step-by-step explanation:
The radius is the distance from the center to a point anywhere along the edge of the circle. To find the distance between these two points, use the distance formula.

 
        
                    
             
        
        
        
True.  If they never intersect then they must have the same slope and are parallel
 
        
             
        
        
        
Answer:
8, 20 and 6
Step-by-step explanation:
A coefficient is the numerical part of an algebraic term. Example: in the term 2x the coefficient is 2.