Hello, I need help with these 2 Finance questions. Thank you in advance.

Chapter 7: Investment Decision Rules 1) Lance Armstrong reportedly was paid $10 million to write his book "It's not about the bike". He received the payment immediately after he signed the deal. The book took two years to write. In the time he spent writing, Armstrong could have been paid to appear at cycling events. Given his popularity, he could earn $6 million per year (paid at the end of each year) appearing at events instead of writing. Assume that his opportunity cost of capital is 10% per year. a. What is the NPV of agreeing to write the book (ignoring any royalty payments)? Should Lance accept the book deal? b. Assume that, once the book is finished, it is expected to generate royalties of $0,8 million in the first year (paid at the end of the year) and these royalties are expected to decrease at a rate of 50% per year in perpetuity. What is the NPV of the book deal with the royalty payments? c. Determine if the book deal with royalties has an IRR between 0% and 10%. Write down the equation you need to solve to find any IRRs and use Excel to calculate. d. Can you use the IRR found to decide if the book deal with royalties is attractive? 2) You are evaluating the following two mutually exclusive projects: Project Cash Flow Cash Flow in Cash Flow in Today One Year Two Years X -$50 $25 $30 Y $30 $0 $35 a. Which project should be undertaken if the cost of capital is 5% per year? b. What if instead the cost of capital is 7% per year?C. Compute the IRR of project Y. d. Plot a graph for both projects with the NPV on the y-axis and the discount rate on the x- axis. e. What does it mean if a project has an IRR of 10%? Suppose an additional project Z comes up with the following cash flows. Project Cash Flow Cash Flow in Cash Flow in Today One Year Two Years Z -$50 $40 $15 Also suppose that now the projects are no longer mutually exclusive (i.e. you can undertake more than one project] but you have only $100 available today to spend on projects. f. Which project(s) should be undertaken if your cost of capital is 5% per year? Use both the NPV and the Profitability Index to answer. g. Does using the Profitability Index always lead to the combination of projects with the highest total NPV? h. Would the firm accept project Z according to the payback period rule if all projects need to have a payback period of one year or less