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• The best estimate for 18, 423, 850 is million.
• 10, 000, 000, 000 rewritten as an integer power of 10 is
• 0.000001 rewritten as an integer power of 10 is
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1 answer

Here are the answers to your questions:

  1. The best estimate for 18,423,850 is 20 million (since 18.4 million is closest to 20 million when rounding to the nearest million).

  2. 10,000,000,000 rewritten as an integer power of 10 is 10^10.

  3. 0.000001 rewritten as an integer power of 10 is 10^(-6).

If you need any further explanations or help, feel free to ask!