You are CEO of Rivet​ Networks, maker of​ ultra-high performance network cards for gaming​ computers, and you are considering whether to launch a new product. The​ product, the Killer​ X3000, will cost $900,000 to develop up front​ (year 0), and you expect revenues the first year of $790,000​, growing to $1.43 million the second​ year, and then declining by 45% per year for the next 3 years before the product is fully obsolete. In years 1 through​ 5, you will have fixed costs associated with the product of $91,000 per​ year, and variable costs equal to 50% of revenues.   
a. What are the cash flows for the project in years 0 through​5?
b. Plot the NPV profile for this investment using discount rates from​ 0% to​ 40% in​ 10% increments.
c. What is the​ project's NPV if the​ project's cost of capital is 10.3%​?
d. Use the NPV profile to estimate the cost of capital at which the project would become​ unprofitable; that​ is, estimate the​project's IRR.