Question

In 1990 there were approximately 7 × 106 people living in New York City. New York City has an area of approximately 8.31 × 102 square kilometers.
What was the population density of New York City in 1990? 2
Answer in units of people/km

Answer 1

I assume you mean that there were \[7 x 10^6\] people and the area was \[8.31 × 10^2\]square kilometers . So how do you think you would go about finding the population density?

Answer 2

You are told that population density is given by the number of people per square kilometer. Can you set up that expression?