Sandra invests $10,832 in the Wise Investment Fund. Three months later her balance has grown to $11,902 and she deposits $2,000. Two months later her fund holdings are $14,308 and she withdraws $7,000. One year after her initial investment, she learns that her holdings are worth $12,566

(a) Write an equation of the value involving the (exact) annual yield I over the two-year period?

(b) Compute the dollar-weighted annual yield over the investment period, then compute another approximation of the annual yield using (2.6.9)?