(Future Value) Sarah Wiggum would like to make a single lump-sum investment and have $1.6 milion at the time of her retirement in 30 years. She has found a muufund trot expects to eam 5 percent annually. How much must Sarah invest today? It Sarah earned an annual retum of 15 percent, how much must she inest today? a. If Sarah can earn 5 percent annually for the next 30 years, how much wil she have to invest today? $. (Round to the nearest cent.)