10 residents of Greenfield are willing to pay someone as much as $8 to mow their lawn, and 10 residents are willing to pay someone as much as $6 to mow their lawn. 30 kids in the neighborhood are willing to mow a lawn each week if they receive at least $5 for the job. Suppose the city of Greenfield imposes a tax of $2 on each resident who hires someone to mow his or her lawn. What is the deadweight loss of that tax

answer; closing the loop;

answer (b); /// a method of measuring the opinions of a large group of people by selecting a subset of the larger group, asking them a set of questions and then generalizing those responses;

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.