In its first month of operations, Skysong, Inc. made three purchases of merchandise in the following sequence: (1) 120 units at $9, (2) 400 units at $10, and (3) 115 units at $11. (a1) Your answer is correct. Calculate the weighted-average unit cost. (Round answer to 3 decimal places, e.g. 15.225.) Weighted-average unit cost $ eTextbook and Media 9.992 Attempts: 2 of 3 used (a2) Assuming there are 400 units on hand, compute the cost of the ending inventory under the average-cost method. (Round answer to O decimal places, eg. 1.250.) The cost of the ending inventory $