plz help thx

Current Attempt in Progress Tamarisk, Inc. markets CDs of numerous performing artists. At the beginning of March, Tamarisk had in beginning inventory 2,600CDS with a unit cost of \$7. During March, Tamarisk made the following purchases of CDs. During March 12,100 units were sold. Tamarisk uses a periodic inventory system. (a) Determine the cost of goods available for sale. The cost of goods available for sale Calculate Average Cost. (Round answer to 3 decimal places, es. 5. 125.) Calculate Average Cost. (Round answer to 3 decimal places, e.g. 5.125.) - Average Cost (b) The parts of this question must be completed in order. This part will be available when you complete the part above. (c) The parts of this question must be completed in order. This part will be avallable when you complete the part above