Use a spreadsheet to find the rate of return of a 4-year investment that, for an initial investment of $1000, returns $100, $200, and $300 at the end of years 1, 2, and 3, respectively, and, at the...

Use a spreadsheet to find the rate of return of a 4-year investment that, for an initial investment of $1000, returns $100, $200, and $300 at the end of years 1, 2, and 3, respectively, and, at the end of year 4, returns (a) $350, (b) $400, (c) $550. Find the rates if the rate of return formula is based on continuously compounded interest.