No. Whatsoever is actually a real word.
No, it is not hyphenated. In this colloquial phase, the word "location" is used as a specific place. In being so, "on" is a separate preposition that is not to be hyphenated.
It isn't required, but stylistically, the choice is yours.
No, hardly ever. Sometimes words that would have a double e might be hyphenated, like re-elect just to make them easier to read (reelect).
No. The term "biggest" has no hyphen. The slang compound adjective "biggest-ever" would.
"Custom tailored" is hyphenated when it precedes whatever it modifies, so you would hyphenate it in forms like "a custom-tailored suit". However, if it is a predicate adjective, it is not hyphenated, so you would say, "All his suits are custom tailored."
Yes, it should be hyphenated like so: sixteen-year-old boys.
It is not hyphenated.
No it's not hyphenated.
Motorcycle is not hyphenated
words are only hyphenated when they have a separate meaning when separated than they do when hyphenated
Yes it should be hyphenated.
No, "hardworking" is not hyphenated.