If a manufacturer of electronic devices invests $620,000 in equipment for making compact piezoelectric accelerometers for general purpose vibration measurement, estimate the rate of return from revenue of $220,000 per year for 10 years and $80,000 in salvage value from the used equipment sale in year 10. Which is the correct equation to calculate the rate of return?

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On july 1, 2016, killearn company acquired 103,000 of the outstanding shares of shaun company for $21 per share. this acquisition gave killearn a 40 percent ownership of shaun and allowed killearn to significantly influence the investee's decisions. as of july 1, 2016, the investee had assets with a book value of $6 million and liabilities of $1,468,500. at the time, shaun held equipment appraised at $140,000 above book value; it was considered to have a seven-year remaining life with no salvage value. shaun also held a copyright with a five-year remaining life on its books that was undervalued by $562,500. any remaining excess cost was attributable to goodwill. depreciation and amortization are computed using the straight-line method. killearn applies the equity method for its investment in shaun. shaun's policy is to declare and pay a $1 per share cash dividend every april 1 and october 1. shaun's income, earned evenly throughout each year, was $580,000 in 2016, $606,600 in 2017, and $649,200 in 2018. in addition, killearn sold inventory costing $93,000 to shaun for $155,000 during 2017. shaun resold $97,500 of this inventory during 2017 and the remaining $57,500 during 2018.a. determine the equity income to be recognized by killearn during each of these years. 2016 2017 2018b. compute killearn’s investment in shaun company’s balance as of december 31, 2018.

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.)