The speed of light in a vacuum is 299,792.458 meters per second. Which number in scientific notation is the BEST estimate of the speed of light?

Answer:
[tex]299,792,458 = \\ 3.0 \times {10}^{8} \: meter \: per \: second[/tex]
[tex]3.0 \times {10}^{8} [/tex]