3.5 miles per hour
Explanation
to find the velocity we need to use this formula
[tex]\text{velocity}=\frac{dis\tan ce}{\text{time}}[/tex]
then
Step 1
let
[tex]\begin{gathered} \text{distance}=3.5\text{ miles} \\ \text{time}=1\text{ hour} \end{gathered}[/tex]Now, replace.
[tex]\begin{gathered} \text{velocity}=\frac{dis\tan ce}{\text{time}} \\ \text{velocity}=\frac{3.5\text{ miles}}{1\text{ hour}} \\ \text{velocity}=\text{ 3.5 miles per hour} \end{gathered}[/tex]therefore, the answer is
3.5 miles per hour
I hope this helps you