A new barcode reading device has an installed cont basis of $20,830 and an estimated service life of eight years. It will have a zero salvage value at that time. The 200% declining balance method is used to depreciate this annet. What will the depreciation charge be in year eight? b. What is the book value at the end of year seven? e. What is the gain for loss) on the disposal of the device is sold for $3,100 aher seven years? The depreciation charge in year eight will be $(Round to the nearest dolar) b. The book value at the end of yearseveni (Rod to the nearest dollar) e. The on the disposal of the device is sold for $3,100 aher seven years is $. Round to the nearest dollar)