Floating and fixed systems. The demand for and supply of a currency in the foreign exchange market and the determination of the equilibrium foreign exchange rate. Including changes in demand for exports and imports, changes in the rate of interest, speculation, and the entry or departure of MNCs. The effects of foreign exchange rate fluctuations on export and import prices and spending on imports and exports via the PED. The difference between, and the advantages and disadvantages of, a floating foreign exchange rate and a fixed foreign exchange rate system. Questions and suggested solutions

The nature and causes of changes in the pattern of employment, for example increase in proportion of workers employed in the tertiary sector and formal economy as an economy develops; a greater proportion of women in the labour force due to changes in social attitudes; decline in the proportion employed in the public sector as a country moves towards a market economy. How unemployment is measured – claimant count and labour force survey – the formula for the unemployment rate. Frictional, structural and cyclical unemployment. The consequences of unemployment for the individual, firms and the economy as a whole. The range of policies available to reduce unemployment and how effective they might be. Review of Unit 4 Questions and suggested answers

Total cost (TC), average total cost (ATC), fixed cost (FC), variable cost (VC), average fixed cost (AFC), average variable cost (AVC). Calculation of TC, ATC, FC, VC, AFC and AVC. Definition, drawing and interpretation of diagrams that show how changes in output affect costs of production. Total revenue (TR) and average revenue (AR). Note: marginal revenue is not required. Calculation of TR and AR. The influence of sales on revenue. Survival, social welfare, profit maximisation and growth. *Unit 3 review Note: marginal cost (MC) not required. Questions with suggested solutions