please show all ateps and calculations

3. You are evaluating two different sound mixers. The Jazzmaster costs $75,000, has a three-year life, and has pre-tax operating costs of $10,000 per year. The Discomaster costs $100,000 has a five- year life, and has pre-tax operating costs of $8,000 per year. For either sound mixer, you use straight-line depreciation to zero over the project's life and assume a salvage value of $18,000. If your tax rate is 35 percent and your discount rate is 13 percent, which do you prefer? Why