The function d(h)=25h+50 models the distance a train traveled from a station, in miles, h hours after crossing a bridge, what is the meaning of the x intercept?

The x intercept is where the line crosses the y axis or where D(h)=0
D(h) is the distance that the train is from the station

so that means that when D(h)=0, that is when the train is at the station

The train crossed the bridge 2h after leaving the station.

9.8? i'm not really sure