Im looking for the work behind the answer to these questions

Use the table for the question(s) below. Visby Rides, a livery car company, is considering buying some new luxury cars. After extensive 15) research, they come up with the above estimates of free cash flow from this project. By how much could the discount rate rise before the net present value (NPV) of this project is zero, given that it is currently 10%? by 27%% by 22% by 17% by 25% Answer: C The Sisyphean Corporation is considering investing in a new cane manufacturing machine that 16) will cost dollor 30,000 and will be depreciated based on the 3-year MACRS schedule (33.33%, 44.45%, 14.81%, 7.41%). If the company has to use straight-line depreciation method instead, what would be the change in the present value of cash flows, with corporate tax rate being 34% and discount rate being 10%. -882 -2,595 2,595 882 Answer: A