Answer and Explanation:
The journal entries are as follows:
1. Petty cash A/c Dr $150
To Cash A/c $150
(Being the establishment of petty cash is recorded)
2.
Entertainment expenses A/c Dr $70
Postage expense A/c Dr $30
Printing A/c Dr $22
To Petty cash A/c $122
(Being the reimbursement of petty cash fund is recorded)