Prepare journal entries for each of the following transactions:
1. Pay $700 for radio advertising for the current month.
2. Purchase supplies of $1,300 on account.
3. Provide services of $2,900 to customers and receive cash.
4. Pay employee salaries for the current month of $900.
5. Provide services of $1,000 to customers on account.
6. Pay utility bill for the current month of $300.