Cori's Dog House is considering the installation of a new computerized pressure cooker for hot dogs. The cooker will increase sales by $8,700 per year and will cut annual operating costs by $12,900. The system will cost $45,000 to purchase and install. This system is expected to have a 4-year life and will be depreciated to zero using straight-line depreciation and have no salvage value. The tax rate is 35 percent and the required return is 10.4 percent. What is the NPV of purchasing the pressure cooker