Answer:
The answer would be, A the domain is time and the range is distance.
Explanation:
The train is travelling at 100 miles per hour, thus the equation would be d=100t meaning that the distance equals 100 times the amount of time. Now, that means that the input is the amount of time it's been going, and the input is the domain. if the input is the domain, then the only thing left to be the input (range) is the y value, or, in this case, the d value.