Preparing for Standardized Tests
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Use the Quotient of Powers Property.
D
To evaluate the average population density of United States, we will divide the population of United States by the land area of the country. To do so we will use the Quotient of Powers Property.
Write as a product of fractions
Calculate quotient
a^m/a^n= a^(m-n)
Calculate power
Multiply
Round to 1 decimal place(s)
Therefore, the correct choice is D.