Can someone please help?
The circumference of the Earth is approximately 131,000,000 ft.
a. Write this number in scientific notation and tell how you knew whether to use a positive or a negative exponent.
b. The circumference of Mars is 7.00 x 107. Which planet is larger, and by how many feet? Write the answer in both standard and scientific notation.

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6 times

no, if you move it 6 times there will be 3 digits left of decimal.
|dw:1441997504656:dw|

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