1 Zack Mason invested $56,000 in cash to start the firm. 4 Purchased office equipment for $6,100 on credit from Den, Inc.; received Invoice 9823, payable in 30 days. 16 Purchased an automobile that will be used to visit clients; issued Check 1001 for $14,100 in full payment. 20 Purchased supplies for $480; paid immediately with Check 1002. 23 Returned damaged supplies for a cash refund of $150. 30 Issued Check 1003 for $3,800 to Den, Inc., as payment on account for Invoice 9823. 30 Withdrew $2,600 in cash for personal expenses. 30 Issued Check 1004 for $1,500 to pay the rent for September. 30 Performed services for $2,550 in cash. 30 Paid $415 for monthly telephone bill, Check 1005. Prepare journal entries for the transactions incurred during September of 2019.