Answer:
look it up on symbolab
Step-by-step explanation:
 
        
                    
             
        
        
        
In year 10, the table says the population is 25,000
But if we plugged x = 10 into the equation Lucy got, then,
y = 600x + 25000
y = 600(10) + 25000
y = 6000 + 25000
y = 31000
Lucy's equation says that the population in year x = 10 should be y = 31000 instead of 25000. So this is one way to show that there is an error. The output from the equation isn't matching what the table shows. 
 
        
             
        
        
        
Answer:
You cannot simplify  anymore.
 anymore. 
But you can convert it to decimal form: 0.656 :)
 
        
                    
             
        
        
        
5/9(104-32)
5/9(72)
360/9
40