These characteristics set the linux os apart from window and mac

Answers:

1. It is open-source software.

4. Its code may be modified by its users.

I got this question right on my quiz.

yes the correct answer was

b.the increased supply will create a surplus.    

answer: marginal utility of the fourth brownie is 0.

explanation: marginal utility is the addtional utility gained from the consumption of one more unit of a good. it is given by,

so, marginal utility at the 4th unit will be given by

since, the values are not given here, you can simply find marginal utility at fourth unit by subtracting total utility at 3rd unit from total utility at 4th unit.