Determine the maturity date, interest at maturity, and maturity value for each of the following notes:

a. A 60-day, 10 percent, $2,400 note dated January 5 received from J. Gibbs for granting a time extension on a past-due account.

b. A 60-day, 12 percent, $1,500 note dated March 9 received from L. Varela for granting a time extension on a past-due account.