Sage offers to pay Allison $450 if Allison will paint her apartment while she is out of town on vacation for two weeks. Allison makes no promise but tells Sage that she will think about it. While Sage is out of town, Allison paints the apartment. This is best described as: a. unilateral contract.
b. quasi contract.
c. implied in fact contract.
d. bilateral contract.

answer; buyer guide;

answer; (c) communism and socialism;

answerpounds of plastic to purchase 200+60-20=(240);

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.