Determine the semi-annual interest payment for the following three bonds: 4 percent coupon corporate bond, 4.75 percent coupon Treasury note, and a corporate zero-coupon bond maturing in 15 years. (Assume a $1000 par value.)

$4.00, $4.75, $0, respectively

$20.00, $23.75, $0, respectively

$20.00, $23.75, $150, respectively

$40.00, $47.50, $0, respectively