At the beginning of 2013, your company buys a $38,000 piece of equipment that it expects to use for 4 years. The company expects to produce a total of 200,000 units. The equipment has an estimated residual value of $6,000 a. Compute the depreciable cost Depreciable Cost b. Compute the depreciation expense per year under the straight-line method. Depreciation Expense per year c. Compute the depreciation rate per unit under the units-of-production method. (Round your answer to 2 decimal places.) Depreciation Rate Per Unit