1. In Perl, scalar variables start with what character?
  2. In Perl, comments begin with what character?
  3. What is the name of the comparison operator that determines whether two strings are not equal?
  4. Write the Perl statement that would assign the value 5 to the key 'brad' in an associative hash named person.
  5. What is the keyword for starting the definition of a Perl subroutine?