if u could show the math that would be helpful :) check mark means its correct

Transactions for Fixed Assets, including Sale The following transactions and adjusting entries were completed by Robinson Furniture Co. during a three-year period. All are related to the use of delivery equipment. The double-declining balance method of depreciation is used. Year 1 Jan. 8. Purchased a used delivery truck for $61,440, paying cash. Mar. 7. Paid garage $210 for changing the oil, replacing the oil filter, and tuning the engine on the delivery truck. Dec. 31. Recorded depreciation on the truck for the fiscal year. The estimated useful life of the truck is 8 years, with a residual value of $12,900 for the truck. Year 2 Jan. 9. Purchased a new truck for $70,560, paying cash. Feb. 28. Pald garage $390 to tune the engine and make other minor repairs on the used truck. Apr 30. Sold the used truck for $40,440. (Record depreciation to date in Year 2 for the truck.) Dec. 31. Record depreciation for the new truck. It has an estimated trade-in value of $12,700 and an estimated life of 7 years. Year 3 Sept. 1. Purchased a new truck for $92,000, paying cash. Sept. 4. Sold the truck purchased January 9, Year 2, for $42,900. (Record depreciation to date in Year 3 for the truck.) Dec. 31. Recorded depreciation on the remaining truck. It has an estimated residual value of $16,600 and an estimated useful life of 10 years Required: Journalize the transactions and the adjusting entries. If an amount box does not require an entry, leave it blank. Do not round intermediate calculations. Round your final answers to the nearest cent. Year 1, Jan. 8 Delivery Truck 61,440 Cash 210 > Mar. 7 Truck Repair and Maintenance Expense Cash 210 Dec. 31 15,360 Depreciation Expense-Delivery Truck Accumulated Depreciation-Delivery Truck 15,360 Year 2, Jan. 9 70,560 Delivery Truck Cash 70,560 Feb. 28 390 Truck Repair and Maintenance Expense Cash 390 1,280 X Apr 30-Deprec. Depreciation Expense-Delivery Truck Accumulated Depreciation-Delivery Truck Apr 30-Sale 12,700 X 40,440 Accumulated Depreciation-Delivery Truck Cash Loss on Sale of Delivery Truck Delivery Truck 12,700X Apr. 30-Sale 40,440 Accumulated Depreciation-Delivery Truck Cash Loss on Sale of Delivery Truck Delivery Truck 11 Dec. 31 12,700 X Depreciation Expense-Delivery Truck Accumulated Depreciation-Delivery Truck 12,700 x 92,000 Year 3, Sept. 1 Delivery Truck Cash 92,000 Sept. 4-Deprec. Depreciation Expense-Delivery Truck Accumulated Depreciation-Delivery Truck Sept. 4-Sale Cash Accumulated Depreciation-Delivery Truck Delivery Truck Gain on Sale of Delivery Truck II III I ll II Dec. 31 Depreciation Expense-Delivery Truck Accumulated Depreciation-Delivery Truck