Answer: 6 miles.
Step-by-step explanation:
1. To solve this problem you only need to add the distances shown in the map attached, which shown the path Marcus had taken. Then, you have:
[tex]Total_{distance}=1in+3inches+2inches+2.3inches\\Total_{distance}=8.3inches[/tex]
2. Now, you must convert the result obtained from inches to miles. According to the problem [tex]4inches=3miles[/tex], therefore, you have:
[tex]Total_{distance}=\frac{8,3inches*3miles}{4inches}\\Total_{distance}=6.22miles[/tex]
3. To the nearest mile:
[tex]Total_{distance}=6miles[/tex]