Cullumber Corporation began operations on January $1,2025.$ The following information is available for Cullumber on December $31,2025$ Accounts payable $ $6,500$ Notes payable $\backslash$$$11,000$ Accounts receivable $4,000$ Rent expense $12,000$ Advertising expense $4,330$ Retained earnings $?$ Cash $5,100$ Service revenue $29,500$ Common stock $17,000$ Supplies $3,900$ Dividends $4,500$ Supplies expense $1,370$ Equipment $28,800$