The tоtаl revenue fоr Jаne's Vаcatiоn Rentals is given as the function R ( x ) = 400 x - 0 . 2 x 2 , where x is the number of apartments filled. What number of apartments filled produces the maximum revenue? What is the maximum revenue? The maximum revenue will be $[BLANK-1] and will occur when [BLANK-2] apartments are filled.