When would u need an interpreter? what would that person do?

If you speak a different language this person can interpret your speaking into the language understandable by the other party

You would need an interpreter when you are trying to converse with someone who speaks another language that you dont know. the interpreter would translate the language you dont know so you can converse

╔═⋄═◇═◈═❖═✧═☆═✧═❖═◈═◇═⋄╗✧   ok, now this, is epic.╚═⋄═◇═◈═❖═✧═☆═✧═❖═◈═◇═⋄╝

The answer to your question is b’(16,14)