negative profit margin To read more The international monetary fund has strongly defended its gloomy forecast of the UK after brexit, saying a warning of a slowdown in growth is imminent. Famous British economist hicks and others argue that the above theory did not consider the factor of income, and therefore unable to determine the level of interest rates, in 1937, and puts forward the is-lm model on the basis of general equilibrium theory. It establishes a theory of interest rates and income at the same time that the four factors of savings and investment, money supply and monetary demand interact. A Bar Mitzvah celebrates that unique day every time a boy comes old at 13 years of age. The term Bar Mitzvah directly translates as "son of commandment", and it is whenever a boy transitions into an adult, where he is now morally and ethically solely in charge of his decisions and actions. For more information on exactly what a Bar Mitzvah signifies, and just how it's celebrated, continue reading.