An alternating current. I Amperes, is given by i = 10sin2nft. where f is the frequenct in Hertz and t the time in seconds. What is the rate of change of current when t = 20ms given that f = 150 Hzπ​

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?