Calculate the amount of depreciation to report during the year ended December 31 for equipment that was purchased at a cost of $80,000 on October 1. The equipment has an estimated residual value of $2,000 and an estimated useful life of five years or 20,000 hours. Assume the equipment was used for 1,000 hours from October 1 to December 31 and the company uses (o) straight-line, (b) double- declining-balance, or () units-of-production depreciation. (Do not round intermediate calculations Depreciat (a) Straight-Line (b) Double-Declining-Balance (c) Units-of-Production