$3\mathrm{.}1$ Assume that the interest rate is $5\%.$ Compute the present value of a five$-$year, $5\%$ coupon bond with a face value of $$20,000.$

$3\mathrm{.}2$ Assume that the interest rate is $7\%.$ Compute the present value of a five$-$year, $5\%$ coupon bond with a face value of $$20,000.$

$3\mathrm{.}3$ Assume that the interest rate is $3\%.$ Compute the present value of a five$-$year, $5\%$ coupon bond with a face value of $$20,000.$