please help solve all parts CORRECTLY ASAP. i'd give a Thumbs up.

A new barcode reading device has an installed cost basis of $20,470 and an estimated service life of eleven years. It will have a zero salvage value at that time. The 150% declining balance method is used to depreciate this asset. a. What will the depreciation charge be in year eleven? b. What is the book value at the end of year ten? c. What is the gain (or loss) on the disposal of the device if it is sold for $3,900 after ten years? a. The depreciation charge in year eleven will be $ (Round to the nearest dollar.)