Assume that an investor deposits $100 at the end of year 1, $200 at the end of year 2, and $300 at the end of year 3. If the investor can earn a 7.5% rate of interest, what will the future value of this stream of cash flows be at the end of 3 years? Multiple choice question. $677.85 $640.79 $630.56 $622.50