Answer:
$38.40
Step-by-step explanation:
to get your total you multiply 
48 x 20% =9.60
then you subtract 48.00 - 9.60 = $38.40
 
        
             
        
        
        
Answer:
82 is 42 degrees warmer than 40
Step-by-step explanation:
if you subtract 40 from 82, you get 42 meaning that the answer will be 42 degrees more than 40
 
        
             
        
        
        
When we take data at work, we always do it over a period of time. To me, just one sample set does not show enough data to come to that conclusion. Also it is one batch of bags. I think you would need to have an average of data from different batches & samples to prove your data is accurate and support your claim.