Posted by **katy** on Wednesday, February 1, 2012 at 3:30pm.

Light travels at a speed of 186,282 miles per second. How could this number be expressed in scientific notation?

1)1,862.82 x 10 x10 x10

2)1.86282 x 10 x10 x 10 x10 x10

3)1.86282 x 10 x10 x10 x10

4)186.282 x -10 x-10 x -10

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