Ineed some on independent and subordinate clauses plz and you

An independent clause is found in a compound sentence and occurs when each clause can operate as a complete sentence in it's own right.

A subordinate clause adds information but does not serve as a sentence in it's own right for example, it relies on the main clause within the sentence to make sense.

The sentence you construct would be a compound sentence and would read:

The journalist met a source at the hotel SO THAT he would get the facts for an article.

it will show up when more than one person gives an answer

to gain popularity at school, fitzgerald wrote plays for the school and cast himself as the star. he also joined one of the universitys most prestigious clubs.