Equipment costing $80,000 with a useful life of 10 years and a residual value of $6,000 has been depreciated for 6 years by the straight-line method Assame a fiscal year ending December 31. Round answers to the nearest dollar What is the accumulated depreciation balance at the end of the sixth year of use, awaming that all adjusting entries were properly recorded? $ What is the book value at the end of the sixth year of use? $