Need help please!

Question 4) As the director of capital budgeting for Denver Corporation, you are evaluating two mutually exclusive projects with the following net cash flows: Project Z Cash Flow -$100,000 10,000 30,000 40,000 60,000 Project X ear Cash Flow 0 -$100,000 50,000 40,000 30,000 10,000 2 4 If Denver's cost of capital is 15 percent, which project would you choose? Question 5) Calculate the internal rate of return (IRR) and the net present value (NPV) of a project with a 15% required return (WACC = 15%) and an initial investment of $3,500,000. The project has a life of 10 years and is expected to earn an annual free cash flow of $700,000