Presented below are selected transactions of Tamarisk Company. Tamarisk sells in large quantities to other companies and also sells its product in a small retail outlet.

March 1		Sold merchandise on account to Dodson Company for $ 13,200, terms  6/10, n/30.
3		Dodson Company returned merchandise worth $ 600 to Tamarisk.
9		Tamarisk collected the amount due from Dodson Company from the March 1 sale.
15		Tamarisk sold merchandise for $ 1,800 in its retail outlet. The customer used his Tamarisk credit card.
31		Tamarisk added  1.00% monthly interest to the customer’s credit card balance.