Final answer:
The correct equation that compares the time (t) with the distance (D) for a train traveling at 80 mph is D = 80t. This means that the distance traveled in miles is equal to 80 times the time in hours.
Step-by-step explanation:
To find the equation that compares the time (t) with the distance (D) that a train travels at 80 mph, you can use the basic formula for speed (velocity), which is distance divided by time (v = d/t). The train's speed is given as a constant 80 mph, so we can rearrange the formula to express distance as a function of speed and time (D = vt).
Therefore, the correct equation that relates time and distance for this train is D = 80t, where D represents the distance traveled in miles, and t represents the time in hours. This means that for every hour of travel, the train covers 80 miles.