What is the value of the following Python expression?

(2 + 5) * 3

Question 9 options:

	7
	15
	17
	21

Question 10 (5 points)

Which of the following best describes the relationship between variable names and comments?

Question 10 options:

	There should be one comment for every variable used in every program
	Using descriptive variable names can reduce the need for comments
	It is best to use short variable names and add a comment describing their use
	It is best to use descriptive variable names and also repeat that description in a comment