the following is a partial year-end adjusted trial balance. account title debits credits sales revenue $ 480,000 loss on sale of investments $ 58,000 interest revenue 7,500 cost of goods sold 250,000 general and administrative expense 58,000 restructuring costs 59,000 selling expense 34,000 income tax expense ? income tax expense has not yet been recorded. the income tax rate is 25%. determine the operating income (loss). determine the income (loss) before income taxes. determine the net income (loss).