operating profit before interest and tax BMO capital markets in the report pointed out that because of interest, inflation hedge and global easing monetary policy to offset the strong dollar, 2018, gold prices are expected to average $1280 an ounce. But the fed's proposed slow, steady rate hike will curb investor demand and limit the upside potential. The optimal combination of benefits and risks is the best combination of benefits and risks. If the benefit is certain, the risk is minimized; Donald trump won the presidency of the United States with the support of working-class and socially conservative white voters on the populist economic nationalist platform. Trump refused the republican traditional pro-business, close trade agenda, just as left-wing Bernie Sanders (Bernie Sanders), called for by the disruptive technology and the policy of "globalism" to free trade and migration of americans. A CBI survey of 109 companies this month found that online sales of black Friday and cyber Monday were "unremarkable". Independence is more difficult in an age when cross-border spillovers of national monetary policy become powerful. These spillover effects make central Banks consider the impact of their policies on foreign and global systems. But it is difficult to pursue global goals when the central bank operates under the narrow, centralized mandate of its independence, and is close to impossible. According to this model, the interest rate decision depends on the supply of savings and investment needs, money supply, money demand, four factors, cause a change in the saving investment, money supply and demand factors will affect the level of interest rates. This theory is characterized by general equilibrium analysis.