Sec. 179 Limitations and Carryovers. In July 2015, Tish acquires and places in service a business machine costing $40,000 with a 7-year MACRS recovery period. Tish elects the maximum allowable Sec. 179 expense on the machine. In August 2015, she also places in service business equipment costing $165,000, with a 5-year MACRS recovery period. Tishs taxable income (before the Sec. 179 expense and the 50% of SE tax deduction) is $16,000. . What is Tishs allowable 2015 Sec. 179 expense on the machine? What amount can she carry over to 2016? . What is Tishs total 2015 depreciation deduction? . What are the limitations on Tishs ability to use the Sec. 179 carryover in 2016? d. How would your answer to Part a change if Tishs business taxable income (before the Sec. 179 expense and the 50% of SE tax deduction) were $37,000 in 2015 instead of $16,000?