Carla Vista Buttons uses a petty cash imprest system. The fund was established on September 4 with a balance of $210. On September 30 , there were $52 cash and the following petty cash receipts in the petty cash box: Carla Vista Buttons uses a petty cash imprest system. The fund was established on September 4 with a balance of $210. On September 30 , there were $52 cash and the following petty cash receipts in the petty cash box