So 1st subtract 181.18-20.99 and that would give you: 160.19 so divide that by 83 and you would get: 193. So Chang drove 193 miles :) Hope this helps
Answer:
create a graph
Step-by-step explanation:
like this
X Y
-3
0
3
and solve for y
[-½, ¾]; use either "Substitution" or "Elimination" to do this, and you'll see that this answer is correct.