A comet is orbiting the sun. The equation d=130,000t represents the relationship between d, the distance traveled by the comet in kilometers and t, the time, in hours, since astronomers first spotted the comet.

What does the 130,000 in the equation tell us about the comet?

The comet will travel 130,000 kilometers in a year.

The comet is traveling at 130,000 kilometers per hour.

The comet has traveled 130,000 kilometers since astronomers spotted it.

The comet has been traveling for 130,000 hours since astronomers spotted it.