4. Determine the maturity date, interest at maturity, and maturity value for a 90-day, 10 percent, $36,000 note from Archer Corporation dated February 15.

5. Determine the interest on the following notes: SHOW YOUR WORK

a. $77,520 at 10 percent for 90 days

b. $54,400 at 12 percent for 60 days

c. $61,200 at 9 percent for 30 days

d. $102,000 at 15 percent for 120 days

e. $36,720 at 6 percent for 60 days