Future value of a portfolio. Rachel and Richard want to know when their current portfolio will be sufficient for them to retire. They have the following balances in their portfolio: Money market account (MM): $ Government bond mutual fund (GB): $ Large capital mutual fund (LC): $ Small capital mutual fund (SC): $ Real estate trust fund (RE): $ Rachel and Richard believe they need at least $ to retire. The money market account grows at annually, the government bond mutual fund grows at annually, the large capital mutual fund grows at annually, the small capital mutual fund grows at annually, and the real estate trust fund grows at annually. With the assumption that no more funds will be deposited into any of these accounts, how long will it be until they reach the $ goal?