Need help with these three accounting 1 questions.

omitted Financial Statement Data For the following four unrelated situations, A through D, calculate Beginning Assets $28,000 $12,000 $28,000 Liabilities 15,500 5,000 19,000 Ending 30,000 Assets 26,000 34,000 17,300 Liabilities 15,000 (b) During Year (a) Sales Revenue 23,500 28,000 Expenses 8,500 19,900 10,100 Dividends 3,000 1,500 Check e unknown amounts appearing in each column (d) 9,000 40,000 19,000 24,000 17,000 1,200