@trevonjb, You may want to consider the purchasing power of the US dollar declining, as evidenced by the higher retail price of the burger, drink and fries you got.
If you think about it, the purchasing power of the currency that Burger King is using to get the ingredients for the food from their suppliers will have to be adjusted for when it comes time to do the math on what to make the retail pricing in order to cover overhead, expenses and profit margins.
Which means that you 'll notice higher prices for smaller amounts/sizes of drinks and food. They do try to make the changes subtle, but they are noticeable to those paying attention.