Step-by-step explanation: if you take 18.83 dollars subtract 2.75 from it then you get 16.08so then since there’s 8 bottles each bottle must of had one cents after the dollar amount. So then you just multiply eight by a number with .1 attached then when u get 16.08 that means that is the cost for every bottle. In this case when you multiply 8 by 2.01 you get 16.08