18. Ed's Car Wash purchased a piece of equipment on January 1, 2009, for $27,000. The equipment has an estimated life of four years or 40,000 units of production and an estimated residual value of $2,000. Compute depreciation for 2009, and 2020 using the following methods: (a) straight-ine, (b) production, and (e) double-decdlining 3,000, and 12,000 units were produced in the respective yeans (10 points) 20 20 traight-line roduction ouble-declining-balance