please help me solve this for financial modeling!!

2. The tahle helow contains data for proiected cash flows for two projects. A) Compute payback period and discounted payback period (for R=6% ) for each project. B) Mnke a plot containing NPV profiles of the two projects, where NPV is a function of required rate of return. C) Find IRRs of the two projects. D) Identify the crossover point (crossover rate) between the two projects