Long Co. invested in marketable securities. At year-end, fair-value changes in this investment were included in Long's other comprehensive income. How would Long classify this investment?

answer; /// multipotentialite means a person who have many different interests and creative pursuits in life; (one true calling);

polymath; means a person   of wide-ranging knowledge or learning;

scanner; means; a device that captures images from photographic prints,posters,magazine pages.ect;

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.