On September 1, Nixa Office Supply had an inventory of 30 calculators at a cost of $18 each. The company uses a perpetual inventory system. During September, the following transactions occurred. Sept. 6 Purchased 90 calculators at $22 each from York, terms net/30. Sept. 9 Paid freight of $90 on calculators purchased from York Co. Journalize the September transactions. (Credit account titles are automatically indented when amount is entered. Do not indent manually. Record journal entries in the order presented in the problem.) Date Account Titles and Explanation Debit Credit