Answer:
its the last one I think.
-3 because you could eliminate the 3x by subtracting it by 3x
For this case we have the following expression:

Applying distributive property to the terms within parentheses taking into account that:

We have:

We add similar terms taking into account that:
Equal signs are added and the same sign is placed.

Thus, an equivalent expression is:

Answer:

Answer:3.5 miles
Step-by-step explanation: