help me with the last part please

REl sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 98 snowboards were sold. Additional data regarding the company's sales of snowboards are provided below. Assume that REl uses a perpetual inventory system. Additional data regarding the company's sales of snowboards are provided below. Assume that REl uses a perpetual inventory system. Calculate the weighted-average unit cost. (Round answers to 3 decimal places, eg. 5.125.) September 1 September 12 September 16 September 19 September 26 September 29 Compute ending inventory at September 30 using FIFO, LIFO, and moving-average. (Round answers to 0 decimal ploces, eg. 125.)