3+1.50n would be an expression for this
        
             
        
        
        

 originally. Then you reduces the side lengths a so it will be

Just note that 40% is the same as 2/5.<span />
 
        
             
        
        
        
Answer:
5
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
As the x-values go to positive infinity, the function's
values go to negative infinity.
Step-by-step explanation:
upon viewing the graph you will notice that the function in blue will appear to go down (negative) as you follow the x to the right, in the positive direction. 
Making your answer to be as the x goes to positive inf (right) the values of the function go to negative inf (down).