Sally has a retirement plan that pays 8% annually, compounded continuously. If she invests $10,000 this year, find a function that when given any future value of the account in $, will return the number of years that it will take for the account to grow to that value. For example, f(25,000) gives the number of years until the account is worth $25,000. f( X)= A In (X/b)​