Final answer:
Mr. Stever would take 0.5 hours or 30 minutes to bike 9 miles.
Step-by-step explanation:
To find the time it takes for Mr. Stever to bike 9 miles at a speed of 18 miles per hour, we can use the formula:
Time = Distance / Speed
Plugging in the values, we have:
Time = 9 miles / 18 miles per hour
Simplifying, we get:
Time = 0.5 hours
So, it would take Mr. Stever 0.5 hours or 30 minutes to bike 9 miles.