An Urban Density Model Is a Formula That Relates the Population

question 126

Multiple Choice

An urban density model is a formula that relates the population density D ( in thousands/ mi ² ) to the distance x (in miles) from the center of the city. The formula for the central density a and coefficient of decay b has been found to be appropriate for many large U.S. cities. For the city of Atlanta in 1970, a = 5.5 and b = 0.10. At approximately what distance was the population density 800 per square mile?

• A)39.8 mi
• B)19.3 mi
• C)21.6 mi
• D)8.4 mi
• E)49.8 mi

---

Definitions:

Research Study

A systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.

Population

The whole number of inhabitants or residents in a particular area or region, often studied in terms of size, density, and distribution.

Subset

A portion or part of a larger group or set that contains some but not all of its elements.

Meta-analysis

A statistical technique that combines the results of multiple scientific studies to derive a more precise estimate of the effect of an intervention or treatment.