To determine the population densities of Europe and the United States, we use the formula for population density:
\[ \text{Population Density} = \frac{\text{Population}}{\text{Land Area}} \]
Calculating Europe’s Population Density:
- Population of Europe: 743.5 million people = 743,500,000 people
- Land area of Europe: 3.9 million square miles = 3,900,000 square miles
\[ \text{Population Density of Europe} = \frac{743,500,000 \text{ people}}{3,900,000 \text{ square miles}} \approx 190.6 \text{ people per square mile} \]
Calculating USA's Population Density:
- Population of the USA: 332.4 million people = 332,400,000 people
- Land area of the USA: 3.5 million square miles = 3,500,000 square miles
\[ \text{Population Density of the USA} = \frac{332,400,000 \text{ people}}{3,500,000 \text{ square miles}} \approx 95.0 \text{ people per square mile} \]
Comparing the Densities:
- Europe: approximately 190.6 people per square mile
- USA: approximately 95.0 people per square mile
Thus, Europe has a population density higher than that of the USA.
The correct response that compares the population densities of Europe and the USA is: "Europe is more densely populated, with a density of 190.6 people per square mile."