Answer:
The Journal entries are as follows:
(a) Accounts Receivable A/c Dr. $13,300
To service revenue $13,300
(To record the accounts receivable)
(b) Supplies A/c Dr. $2,000
To Accounts Payable $2,000
(To record the supplies on account)
(c) Rent Expense A/c Dr. $2,600
To cash A/c $2,600
(To record the rent paid)
(d) Cash A/c Dr. $10,300
To Accounts Receivable $10,300
(To record the cash received from students)