Oriole Company purchased a new machine on October 1, 2017, at a cost of $93, 300. The company estimated that the machine has a salvage value of $8, 900. The machine is expected to be used for 61, 800 working hours during its 8-year life. Compute depreciation using the following methods in the year indicated. Declining-balance using double the straight-line rate for 2017 and 2018. (Round answers to 0 decimal places, e.g. 125) Calculate the depreciation cost per hour. (Round answer to 2 decimal places, e.g. $1.25) Units-of-activity for 2017, assuming machine usage was 420 hours. (Round answer to 0 decimal places, e.g. 125)