The high-tech home of today features computer apps that control electrical home appliances from mobile devices. For a typical home, the estimated benefits of a certain high-tech home is $1,500 per year. What is the internal rate of return if the cost is $3,850 and study period is 5 years? The high-tech home of today features computer apps that control electrical home appliances from mobile devices. For a typical home, the estimated benefits of a certain high-tech home is $1,500 per year. What is the internal rate of return if the cost is $3,850 and study period is 5 years