21) Martindale Motors purchased a machine that will help diagnose problems with engines that are used in its production department. The machine was purchased on January 1,2023 at a cost of $210,000. A residual value of $10,000 was estimated. The expected useful life is 5 years. In 2023, Martindale Motors has a gross profit of $400,000 and operating expenses of $180,000. The tax rate is 35%. Required: 1. Compute the depreciation expense for 2023 under both the straight-line and double-declining-balance depreciation methods. 2. What is the net cash saved if the accelerated depreciation method is used in 2023