Hi there! $8 per 4 bottles means price/# of bottles will give you the average price per bottle. 
8/4=$2
Therefore it is $2 for 1 bottle. 
Hope this helps!
        
                    
             
        
        
        
Answer:
ok nice to know 
Step-by-step explanation:
that wasnt even a ????
 
        
             
        
        
        
-8 
On the number line you either start at -3 or -5 and you got your answer 
        
             
        
        
        
Answer: 3
Step-by-step explanation:
simply divide 1200 by 400. :)
 
        
             
        
        
        
<u>Answer:</u>
29 years
<u>Step-by-step explanation:</u>
- Given the function  , where x stands for the number of years since the material was put into the vault, we can plug 140 into x to find the amount leftover. , where x stands for the number of years since the material was put into the vault, we can plug 140 into x to find the amount leftover.
- Another way of doing this is to change the function to  which are equivalent functions, and then plug 140 into x. This function is helpful if you also needed to find the rate. which are equivalent functions, and then plug 140 into x. This function is helpful if you also needed to find the rate.
- I'll use the 1st function because the question doesn't ask for the rate

From here I'll just use a calculator & get 28.7, or 29 years.