invest today? II Sarah eamed an annual roturn of $16$ percent, how soon could she then retire?

a$.$ If Sarah can earn $6$ percent annually for the next $34$ years, the amount of money she will have to invest today is $ $($Round to the nearest cent.$)$

b$.$ If Sarah can earn an annual retum of $16$ percent, the number of years until she could retire is years. $($Round to one decimal place$)$