not required
You do not hyphenate the number.
How do you write the number seventeen and seventeen hundredths?
Can you, or should you? You can hyphenate it if you're moving between lines in a paragraph and need to break up the word. You shouldn't hyphenate it normally.
"16- and 17-year-old applicants" OR "sixteen- and seventeen-year-old applicants"
A hyphen is not required.
McCarthy should not be hyphenated.
Yes it should be hyphenated.
Number Seventeen was created in 1932.
Yes it should be hyphenated: co-worker.
Yes it should be hyphenated.
Yes, hyphenate by-laws.
The duration of Number Seventeen is 1.07 hours.