Miner's mexican grill inc. plans to open its 100th restaurant by the end of next year. the new restaurant will require an initial investment of $300,000 and an annual operating cost of $31,000. it will have a $62,000 salvage value after 6 years. the company also estimates that the new restaurant will bring in revenue of $43,400 each year. calculate the irr of the investment if the company's minimum attractive rate of return is 12% per year. (hint: skip $ and, symbols, but include +/- signs. if interest, report in percentage, but skip %.)