Answer:
18
Step-by-step explanation:
I hope this helps
 
        
             
        
        
        
Do u still need the answer its been a week now!
        
             
        
        
        
Simply substitute the point into the given equation; as there is one variable, you only need one point and so one is given. When done so, you shall get b=4
 
        
        
        
400x6=2400 This is how a find a product
        
             
        
        
        
The new cost would be 1661.175 if u want it rounded it would be 1661.18 because you would need to do 1444.5 x .15 and then add that to 1444.5