To find the distance Brian biked, we use the formula:
\[ \text{Distance} = \text{Speed} \times \text{Time} \]
In this case, Brian's average speed is 12.2 miles per hour and the time he spent mountain biking is 1.45 hours.
Now, we can calculate the distance:
\[ \text{Distance} = 12.2 , \text{miles/hour} \times 1.45 , \text{hours} \]
Let's perform the multiplication:
- \( 12.2 \times 1.45 \):
- First, multiply 12.2 by 1.45:
- \( 12.2 \times 1.45 = 17.69 \)
So, Brian biked a distance of 17.69 miles.
Therefore, the answer is:
Brian biked a distance of 17.69 miles.