# It takes light to roughly 3.0 times 10^9 seconds to travel one meter. How do you write this time in standard form?

$3.0 \times {10}^{-} 9 = 0.000 , 000 , 003$ seconds
I am presuming that you meant $3.0 \times {10}^{-} 9$ seconds, as the speed of light is very fast so it should take a very short time to travel one meter rather than a very long time.
If you are really interested, $3.0 \times {10}^{9}$ seconds = $3 , 000 , 000 , 000$ seconds.