Marginal utility is

a. The sum of the total utility of consuming a certain amount of a good.
b. The diminishing nature of total utility.
c. Always negative or zero.
d. The change in total utility obtained by consuming one additional unit of a good or service.

Do you think a travel organization company might be able to get less expensive airline tickets then you as an individual could get? (no less then 25 words)

Jose recently died with a probate estate of $900,000. he was predeceased by his wife, guadalupe, and his daughter, lucy. he has two surviving children, pete and fred. jose was also survived by eight grandchildren, pete’s three children, naomi, daniel, nick; fred’s three children, heather, chris and steve; and lucy’s two children, david and rachel. jose’s will states the following “i leave everything to my three children. if any of my children shall predecease me then i leave their share to their heirs, per stirpes.” which of the following statements is correct? (a) under jose’s will rachel will receive $150,000. (b) under jose’s will chris will receive $150,000. (c) under jose’s will nick will receive $100,000. (d) under jose’s will pete will receive $200,000.

Why is efficiency an important economic goal?