Stuck on part 2!

e 3 S2-7 Journalizing transactions and posting to T-accounts Roland Foster Optical Dispensary completed the following transactions during the latter part of March: Purchased office supplies on account, $3,400. Paid $1,800 on account. Mar. 15 28 Requirements 1. Journalize the transactions of Roland Foster Optical Dispensary. Include an 2. Open the following accounts (use T-acount format): Cash (Beginning Balance explanation with each journal entry of $21,000), Office Supplies, and Accounts Payable. Post the journal entries from Requirement 1 to the accounts, and compute the balance in each account