Answer:
See the explanation below.
Step-by-step explanation:
Due date Interest Due
a. April 9 $40,000 * 5% * (90/360) = $500
b. September 14 $18,000 * 8% * (180/360) = $720
c. July 4 $90,000 * 7% * (30/360) =$525
d. December 6 $36,000 * 3% * (90/360) = $270
e. January 18 - next year $27,000 * 4% * (60/360) = $180