You are considering investing in a start$-$up company. The founder asked you for $$290,000$ today and you expect to get $$1,070,000$ in eight years. Given the riskiness of the investment oppor$-$tunity, your cost of capital is $21\%.$ What is the NPV of the investment opportunity? Should you undertake the investment opportunity? Calculate the IRR and use it to determine the maximum deviation allowable in the cost of capital estimate to leave the decision unchanged. Can you please calculate it without using exel? thank you!