Respuesta :
Answer:
The equation that describes the distance of the train from Greensburg as the time increases is "current distance = d - 80*t".
Step-by-step explanation:
The initial train's distance from the train to Greensburg is "d", as the train travels and the time increases the distance should decrease as time increases, since the train is travelling in that direction, the rate that the distance should decrease is 80 miles at every hour. So the equation that will describe that behaviour should be:
current distance = d -80*t
Where d is the distance between the cities and t is the time the train is travelling.
Answer:
d = D - 80*t
where d is the train's distance to Greensburg, D is the distance from Springfield to Greensburg and t is the time travelled in hours.
Step-by-step explanation:
Let's call the distance from Springfield to Greensburg D, and the train's distance to Greensburg d.
We know that the train is traveling towards Greensburg, so its distance to Greensburg will decrease over time, so for our equation we must use a negative speed (-80 miles per hour)
We can then write the following equation:
d = D - 80*t
where t is the amount of time the train travelled in hours.
