Question

Ariel travels 400 miles in 8 hours. What is her rate of change or speed? A) 40 miles per hour B) 50 miles per hour C) 55 miles per hour D) 60 miles per hour

Answer 1

Answer:b

Explanation:

Answer 2

Answer: The correct option is

(B) 50 miles per hour.

Step-by-step explanation: Given that Ariel travels 400 miles in 8 hours.

We are to find her rate of change or speed.

We know that

the relation between distance (D), time (T) and speed (S) is as follows :

`S=(D)/(T).`

In the given situation, we have

distance, D = 400 miles and time, T = 8 hours.

Therefore, the speed is given by

`S=(D)/(T)=(400)/(8)=50~\textup{miles per hour}.`

Thus, the required speed is 50 miles per hours.

Option (B) is CORRECT.