You want to save money for four years. You plan to deposit $3,000 at the end of year 1; $3,000 at the end of year 2, $5,000 at the end of year 3, and $6,000 at the end of year 4. a) If you are earning 6% on these deposits, what will you have at the end of year 4? (It may help to draw a time line for this problem). Use both the CF register and the time value buttons on the Tl BAII Plus Calculator for full credit.. b) What total interest in dollars will you have earned by the end of the four years