Final answer:
Halen's biking rate is calculated by dividing the distance he biked (2.5 miles) by the time it took (0.25 hours), giving us a rate of 10 miles per hour.
This rate is verified as reasonable by considering distances covered in similar time frames.
Step-by-step explanation:
The student's question is regarding the calculation of Halen's biking rate in miles per hour based on the given information that Halen bikes 2 1/2 miles in 1/4 of an hour.
To find the rate, we need to divide the distance traveled by the time taken.
Halen biked 2.5 miles (since 2 1/2 equals 2.5) in 0.25 hours (since 1/4 of an hour equals 0.25 hours).
To calculate the rate in miles per hour:
Rate = Distance / Time
Rate = 2.5 miles / 0.25 hours
Rate = 10 miles per hour
Therefore, Halen's biking rate is 10 miles per hour.