Drs. Glenn Feltham and David Ambrose began operations of their physical therapy clinic, called Northland Physical Therapy, on January 1, 2020. The annual reporting period ends December 31. The trial balance on January 1, 2021, was as follows (the amounts are rounded to thousands of dollars to simplify): Account Titles Cash Accounts Receivable Supplies Equipment tes Accumulated Depreciation Software Accumulated Amortization Accounts Payable Notes Payable (short-term) Salaries and Wages Payable Interest Payable Income Taxes Payable Deferred Revenue Common Stock Retained Earnings Service Revenue Depreciation Expense Amortization Expense Salaries and Wages Expense Supplies Expense Interest Expense Income Tax Expense Totals Debit Credit $8 B $ 2 0 2 0 0 14 0 $ 29 $ 29 Transactions during 2021 (summarized in thousands of dollars) follow: a. Borrowed $30 cash on July 1, 2021, signing a six-month note payable. b. Purchased equipment for $33 cash on July 2, 2021. c. Issued additional shares of common stock for $4 on July 3. d. Purchased software on July 4, $4 cash, e. Purchased supplies on July 5 on account for future use, $6. f. Recorded revenues on December 6 of $65, including $10 on credit and $55 received in cash. g. Recognized salaries and wages expense on December 7 of $38; paid in cash. h. Collected accounts receivable on December 8, $7.