Are there multiple IRRs for the following cash-flow sequence? How many are possible according to Descartes' rule of signs? If 10% per year, what is the ERR for the cash flows of this project? Let MARR-10% per year. 10 EOY Cash Flow ($) 120 90 60 30 -1,810 600 500 400 300 200 100 0 2 4 6 7 8 There is(are) A maximum of IRR value(s) is(are) suggested by the Descartes' rule of signs. The ERR for the cash flows of this project is %. (Round to two decimal places.) V IRR(s) for the given cash-flow sequence