Martinez Corp. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Martinez Corp.s purchases of EZslide snowboards during September. During the same month, 116 EZslide snowboards were sold. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 15 $106 $1,590 Purchases Purchases Sept. 12 49 109 5,341 Sept. 19 58 110 6,380 Sept. 26 Purchases 23 111 2,553 Totals 145 $15,864 Additional data regarding the company's sales of EZslide snowboards are provided below. Assume that Martinez Corp. uses a perpetual inventory system. Date Units Sept. 5 Sale Sept. 16 Sale 54 Sept. 29 Sale 54 Totals 116 (a) Calculate the average unit cost. (Round answers to 3 decimal places, e.g. 5.125.) September 1 $. September 5 $1 September 12 %$4 September 16 $4 September 19 %$4 September 26 $4 September 29 %$4 %24