input: Write a python function to extract the name and gpa from the student_data dictionary.
  assert extract_name_gpa(student_data) == ('John Smith', 3.25)
  assert extract_name_gpa({'name': 'Jane Doe', 'gpa': 3.85}) == ('Jane Doe', 3.85)
  assert extract_name_gpa({'name': 'Alex Brown', 'gpa': 2.75}) == ('Alex Brown', 2.75)
output: def extract_name_gpa(student_data):
      return student_data['name'], student_data['gpa']