Halogen Laminated Products Company began business on January 1, 2021. During January, the following transactions occurred: Jan.
1 Issued common stock in exchange for $115,000 cash.
2 Purchased inventory on account for $30,000 (the perpetual inventory system is used).
4 Paid an insurance company $1,800 for a one-year insurance policy. Prepaid insurance was debited for the entire amount.
10 Sold merchandise on account for $11,500. The cost of the merchandise was $6,500.
15 Borrowed $25,000 from a local bank and signed a note. Principal and interest at 10% is to be repaid in six months.
20 Paid employees $5,500 salaries for the first half of the month.
22 Sold merchandise for $9,500 cash. The cost of the merchandise was $5,500.
24 Paid $14,500 to suppliers for the merchandise purchased on January 2.
26 Collected $5,750 on account from customers.
28 Paid $1,000 to the local utility company for January gas and electricity.
30 Paid $3,500 rent for the building. $1,750 was for January rent, and $1,750 for February rent. Prepaid rent and rent expense were debited for their appropriate amounts.

Required:
a. Prepare general journal entries to record each transaction.
b. Post the transactions into the appropriate T-accounts.
c. Prepare an unadjusted trial balance as of January 30, 2021.