Complete Question:
Corinne is taking a train into the city. The train travels at a rate of 45 miles per hour. Which quantity depends on the other?
A. The distance traveled depends on the number of hours traveled.
B. The number of hours traveled depends on the speed of the train.
C. The speed of the train depends on the distance traveled.
D. The speed of the train depends on the number of hours traveled.
Answer:
A. The distance traveled depends on the number of hours traveled.
Step-by-step explanation:
Recall:
Distance traveled = speed * time
The distance between or route taken from one point to the other is usually fixed
Here, the speed of the train , rate is constant, hence for the journey, speed is constant ;
Speed = K
Distance = K * time
Hence, the distance traveled in this scenario depends on the time of travel.
multiplied by 
