Sarah Wiggum would like to make a single​lump-sum investment and have ​$1.6 million at the time of her retirement in 32 years. She has found a mutual fund that expects to earn 4 percent annually.
How much must Sarah invest​ today?
If Sarah earned an annual return of 16 ​percent, how much must she invest​ today?
If Sarah can earn 4 percent annually for the next 32 ​years, how much will she have to invest​ today?