Billabong Tech uses the internal rate of return(IRR) to select projects. Calculate the IRR for each of the following projects and recommend the best project based on this measure. ProjectT-Shirt requires an initial investment of $17,000 and generates cash inflows of $5,500 per year for 6 years. Project Board Shorts requires an initial investment of $29,000 and produces cash inflows of $10,500 per year for 7 years.