I need help with four questions most are already started and almost done. But, I need help with numbers 1,3,4 and 5. Can someone please help.

2.00 points M7-7 Calculating Cost of Goods Available for Sale, Cost of Goods Sold, and Ending inventory under FIFO, LIFO, and weighted Average Cost (Periodic Inventory) [LO 7-3] Aircard Corporation tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period as if it uses a periodic inventory system. The following are the transactions for the month of July July1 Beginning Inventory July 5 Sold July 13 Purchased July 17 Sold July 25 Purchased July 27 Sold Units Unit Cost 2,000 S35 1,000 6,000 3,000 8,000 5,000 37 39 Calculate the cost of goods available for sale, ending inventory, and cost of goods sold if Aircard uses (a) FIFO, (b) LIFO, or (c) weighted average cost. (Round "Cost per Unit" to 2 decimal places.) Weighted Average Cost FIFO LIFO Cost of Goods Available for Sale Ending Inventory Cost of Goods Sold $604,000604,000604,000 255,000 273,000 $331,000349,000