KC Corporation purchased a new machine for its assembly process on August 1, 2010. The cost of this machine was $150,000. The company estimated that the machine would have a salvage value of $24,000 at the end of its service life. Its life is estimated at 5 years and its working hours are estimated at 21,000 hours. Year-end is December 31. Instructions: Compute the depreciation expense under the following methods. (a) Straight-line depreciation. (b) Double-declining balance c) Search from the internet various accounting standards related to Depreciation.