The graph shows how many miles Barrett traveled over a 5 hour time frame. The point (1, 50) is on the graph. What is the unit rate for the first hour?

Responses
A 1 mile per hour1 mile per hour
B 50 miles per hour50 miles per hour
C 100 miles per hour100 miles per hour
D

mile per hour1 50 mile per hour

To find the unit rate for the first hour, we need to find the change in distance over the change in time.

We are given that the point (1, 50) is on the graph. This means that at the first hour (when time is 1), Barrett has traveled 50 miles.

Therefore, the unit rate for the first hour is 50 miles per hour.

The correct answer is B.