Answer:
$50,581.9
Step-by-step explanation:
 
        
             
        
        
        
The answer is 2 to the power of 6
        
                    
             
        
        
        
Sorry but this isnt even a full question.......
        
             
        
        
        
Answer: the system of equations that represents this situation are 
12x + 6y = 180
x = 2y
Step-by-step explanation:
Let x represent the number of hardcover books that were sold in a day.
Let y represent the number of paperback books that were sold in a day.
The discount bookstore sells hardcover books for $12 and paperback books for $6. The total sales that day were $180. It means that 
12x + 6y = 180
The number of hardcover books sold that day was twice the number of paperback books. It means that 
x = 2y