15-What interest rates should be used in determining the amount of interest to be capitalizedz How should the amount of interest to be capitalized be determined? 16-Calculate depreciation A machine which cost $500,000 is acquired on October 1, 2017. Its estimated salvage value is $50,000 and its expected life is eight years. Instructions (1) Calculate depreciation expense for 2017 and 2018 by the following method, showing the figures used. (a) Double-declining balance 17-Calculate depreciation. A machine cost $900,000 on April 1, 2017. Its estimated salvage value is $90,000 and its expected life is eight years. Instructions (1) Calculate the depreciation expense (to the nearest dollar) by each of the following methods showing the figures used. (a) Straight-line for 2017 (b) Double-declining balance for 2018 (c) Sum-of-the-years-digits for 2018 (2) Which method would result in the smallest income amount for 2018