Answer:
you pay 240 dollars a year
Step-by-step explanation:
y=20x
x is 12
20*12=
240
 
        
                    
             
        
        
        
4x - 12
You can get this by switch the f(x) and the x and then solving for the new f(x) 
        
             
        
        
        
Answer:
2/3, 12/18 and 18/27
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:8% discount will be given 
Step-by-step explanation: