Please help!! I am very confused on how you know what numbers to use when solving for different things as well as when you add and subtract. So please use as much detail as possible when solving. I truly want to understand how to do this for the final.

Use the following information to answer questions 23-29. The following items are taken from the financial statements of Camp Fire Company for the year ending 12/31/2017: Cash Accounts receivable Prepaid insurance (12-month policy) Supplies Equipment Accumulated depreciation -equipment Accounts payable Note payable, due 6/31/2018 Common stock Retained earnings, 1/1/2017 Dividends Service revenue Advertising expense Depreciation expense Insurance expense Rent expense Salaries expense Supplies expense 15,000 11,000 6,000 4,000 210,000 28,000 $20,000 80,000 90,000 12,000 14,000 133,000 21,000 12,000 3,000 17,000 32,000 6,000 23. What is the company's net income for the year ending 12/31/2017? a. $133,000 b. $42,000 C. $28,000 d. $12,000 24. What is the balance that would be reported for Retained earnings at 12/31/20171 a. $12,000 b. $40,000 c. $42,000 d. $56,000 25. What are total current assets at 12/31/2017? a. $26,000 b. $32,000 c. $36,000 d. $218,000 26. What is the book value of the equipment at 12/31/2017? a. $238,000. b. $210,000 c. $182,000 d. $170,000 What are total current liabililites at 12/31/2017? a. $20,000 b. $80,000 c. $100,000 d. $0. 27