Question

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08:46






The table below shows the population of the three countries in 2011.

Country United States Canada Mexico
Population 3.1 × 108 3.38 × 107 1.2 × 108


About how many times larger was the population of the United States than Canada in 2011?
A 3.72 × 1016
B 9.17 × 100
C 9.17 × 1014
D 1.25 × 1016
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Answer 1

Compute (3.1 × 10^8) / (3.38 × 10^7) = (3.1/3.38) × 10^(8−7) ≈ 0.917 × 10^1 = 9.17.
So the United States population was about 9.17 times larger — choice B.