1. Employment Opportunities: Regions with industrial and commercial hubs, such as urban centers, attract large populations. Example: New York City.
2. Economic Stability: Areas with higher incomes and better living standards, like Western Europe, have denser populations.
3. Agricultural Productivity: Fertile plains like the Ganga Basin in India support dense rural populations.

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?