REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 110 snowboards were sold. 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, e.g. 5.125.) September 1$ September 5$ September 12$ September 16$ September 19$ September 26$ September 29$