Carl puts $10,000$ into a bank account that pays an annual effective

interest rate of $4\%$ for ten years, with interest credited at the end of

each year. If a withdrawal is made during the first five and one$-$

half years, a penalty of $5\%$ of the withdrawal is made. Carl with$-$

draws K at the end of each of years $4,5,6$ and $7.$ The balance in

the account at the end of year $10$ is $10,000.$ Calculate K

$1\mathrm{.}1\mathrm{.}5($a$)$ Unit values in a mutual fund have experienced annu