Answer:
33.275
Step-by-step explanation:
<u>1 step:</u> Difference in brackets

<u>2 step:</u> 

<u>3 step:</u> 

<u>4 step:</u>

<u>5 step:</u>

3x+6, you have to distribute the negative to get the parentheses away and simplify
2miles=20km
20km/4=5km
5km=0,5mile
Runned 0.5 miles in total