Billy and Mandy Jones have ?$21,000 to invest. On? average, they do not make any investment that will not return at least 7.7?% per year. They have been approached with an investment opportunity that requires ?$21,000 upfront and has a payout of ?$6,200 at the end of each of the next 5 years.
Using the internal rate of return? (IRR) method and their? requirements, determine whether Billy and Mandy should undertake the investment. (round to one decimal place)