Lisa's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Lisa's snowboards during September is shown below. During the same month, 120 Xpert snowboards were sold. Additional data regarding Lisa's sales of Xpert snowboards are provided below. Assume that Lisa's uses a perpetual Calculate moving average cost at Sept 1,5,12,16,19,26&29. (Round answers to 2 decimal places, eg. 1.25.) September 1 September 5$ September 12$ September 16 September 19 September 26 September 29