In 2018, Tish acquires and places into service in her business 7 year MACRS property costing $40,000 and 5-year MACRS property costing $165,000. Tish elects Sec. 179 expensing for all of the properties' cost. Tish's taxable income (before the Sec. 179 and 50°/c, of self-employment tax deductions) is $160,000. 

a. What amount may Tish deduct under Sec. 179 for 2018 for the properties? What amount can she carry over co 2019?

b. What is Tish's total 2018 depreciation deduction?

c. What are the limitations on Tish's ability co use the Sec. 179 carryover in 2019?

d. How would your answers co Parts a, b, and c change if Tish's 2018 business taxable income (before the Sec. 179 expense and the 50% of self-employment tax deductions) was $300,000 instead of $160,000?