Acompany purchased a tract of land for its natural resources at a cost of $1,981,300. it expects to mine 2,170,000 tons of ore from this land. the salvage value of the land is expected to be $267,000. the depletion expense per ton of ore is:

Microsoft's stock price peaked at 6118% of its ipo price more than 13 years after the ipo suppose that $10,000 invested in microsoft at its ipo price had been worth $600,000 (6000% of the ipo price) after exactly 13 years. what interest rate, compounded annually, does this represent? (round your answer to two decimal places.)