math
posted by katy .
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 x10 x 10

1.86282 * 10^5
I guess that would be B, but it's not scientific notation as given there.