Answer:
For product A, the product is increasing, for the bigger the number you plug into x (due to the fact that the numbers become bigger because of the time: year 1, year 2, etc)
Product A is 82% change rate, while 
product B is 983.45/4 = 245.8625,  1756.16/3 = 585.3867
Product B is 245.8625/585.3867
product B is 42% change rate
Product A change rate is higher than Product B by 40%
Step-by-step explanation:
Hope this helped! :)
 
        
             
        
        
        
The given matrix represent the following linear system
   4x  - 7y = -12
-14x + 4y =    4
Good luck!!!