Answer:
12.5 hours
Step-by-step explanation:
The function d(x) = 1375 -110x represents the distance in miles a high-speed train is from its destination after x hours of travel.
So, when the train reaches its destination then d(x) will become zero miles.
Therefore, 0 = 1375 - 110x
⇒ x = 12.5 hours.
So, the train will travel 12.5 hours to reach its destination. ( Answer )