Sarah Wiggum would like to make a single investment and have $1.5 million at the time of her retirement in 28 years. She has found a mutual fund that will earn 7 percent annually. How much will Sarah have to invest today? If Sarah earned an annual return of 15 percent, how soon could she then retire?

A. If Sarah can earn 7% annually for the next 28 years, the amount of money she will have to invest today is?

B. If Sarah can earn 15% annually, how soon can she retire?