ILL THUMBS UP PLS ASAP ITS A TEST!!!!!

Hamilton Company bought a plant asset that cost $87,000. The asset has a $7,000 salvage value and a useful life of 5 years. Calculate the following: A) Depreciable cost B) Depreciation expense for year 3 under declining balance method C) Accumulated depreciation at the end of year 4 under straight line depreciation D) Book value of this asset at the end of year 5 under either method