b-1. Prepare a chart of cash flows for the four dates corresponding to the turns of the year for January 1, 2018, to January 1, 2021. (Negative amounts should be indicated by a minus sign.) Cash Flow Date 2018 2019 2020 2021 b-2. What is the dollar-weighted rate of return? (Hint: If your calculator cannot calculate internal rate of return, you will have to use a spreadsheet or trial and error) (Negative value should be indicated by a minus sign. Round your answer to 4 decimal places.) Rate of return %