After the spring equinox, in either hemisphere, days grow longer until reaching their maximum at the summer solstice. then, they begin to shorten again until the autumnal equinox when daylength once again is equal to the length of the night. days continue to shorten after this event until they are at their shortest at the winter solstice. which of the following are true of equinoxes?

answer; intellectual property protection;

answer; /// the use of a bank credit card to make purchase;

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.