Haig Company maintains a petty cash fund for small expenditures. The following transactions occurred over a 2-month period.
July 1 Established petty cash fund by writing a check on China Bank for $100.
15 Replenished the petty cash fund by writing a check for $96.90. On this date the fund consisted of $3.10 in cash and the following petty cash receipts: freight-out $51.00, postage expense $20.50, entertainment expense $23.10 and miscellaneous expense $6.10.
31 Replenished the petty cash fund by writing a check for $95.90. At this date, the fund consisted of $4.10 in cash and the following petty cash receipts: freight-out $43.50, charitable contributions expense $20.00, postage expense $20.10 and miscellaneous expense $12.30.
Aug. 15 Replenished the petty cash fund by writing a check for $98.00. On this date, the fund consisted of $2.00 in cash and the following petty cash receipts: freight-out $40.20, entertainment expense $21.00, postage expense $16.00 and miscellaneous expense $19.80.
16 Increased the amount of the petty cash fund to $150 by writing a check for $50.
31 Replenished petty cash fund by writing a check for $137.00. On this date, the fund consisted of $13 in cash and the following petty cash receipts: freight-out $74.00, entertainment expense $43.20, and postage expense $17.70.

Instructions
(a) Journalize the petty cash transactions.
(b) Post to the Petty Cash account.
(c) What internal control features exist in a petty cash fund?