Choose any three concepts. Write a short essay defining and explaining the importance of each of the chosen concept. Each concept essay should not exceed 500 words (or 1500 words in total for the three concepts).
1. Consumer equilibrium
2. Income and substitution effects
3. Marginal rate of substitution
4. Backward bending labour supply curve
5. Producer equilibrium
6. Returns to scale
7. Short-run and long-run costs
Total factor productivity growth
