how to become a non profit business As hicks income concept did not specify what is called "equal wealth", and thus the income concept formed the basis of many debates concept, and the theory of accounting earnings, especially the capital preservation theory has a great influence. In accounting, people used to call "maintaining the same level of affluence" as capital preservation. It is not obvious in some analyses, but it is important to note that economic profits include opportunity costs. The profit of an entrepreneur (normal profit) is usually positive, but economic profit can be either positive or negative (loss). That's why the opportunity cost is included: in a completely competitive market, when marginal cost equals marginal revenue, profit maximization or loss minimization conditions arise. If the market price is lower than the total average cost, which means that the economic profit is negative, the entrepreneur needs to compare the value of the loss and the average variable cost. If the business continues to operate, the negative economic profit must not be lower than the average variable cost, otherwise the entrepreneur would rather shut down the company than continue to take the loss. The city of bentugon salvis, in the southwestern state of Rio grande do, has a reputation as the "capital of Brazilian wine" and has a history of almost 150 years. Nearly 85 per cent of Brazil's wine is produced in more than 700 vineyards, which have a total area of less than 400 square kilometres. The wine is fresh and balanced with cabernet sauvignon, merlot and chardonnay. "We are concerned that if the UK decides to leave, it is likely to lead to a weaker pound, higher inflation, lower disposable income and less investment," she said. Frances O 'grady, chief secretary of the UK federation of industry and industry, said: "this suggests that brexit uncertainty has damaged the household budget. Work and living standards must be a priority in determining the best choice for brexit. The government should maintain a single market membership at the negotiating table. " Recently, the yield of celestica monetary fund balance treasure has attracted the attention of investors, since August, balance of treasure yields falling, so far, the balance of monthly average yield has fallen below 4%.