When using a supply-and-demand model to illustrate how land rents are set, economists typically draw the supply curve as a vertical line because: a. the supply of land is fixed.
b. the supply of land is perfectly inelastic.
c. the quantity supplied of land does not increase when rents go up.
d. All of these are correct.

Luis and rosa, citizens of costa rica, moved to the united states in year 1 where they both lived and worked. in year 3, they provided the total support for their four young children (all under the age of 10). two children lived with luis and rosa in the u.s., one child lived with his aunt in mexico, and one child lived with her grandmother in costa rica. none of the children earned any income. all of the children were citizens of costa rica. the child in mexico was a resident of mexico, and the child in costa rica was a resident of costa rica. how many total exemptions (personal exemptions plus exemptions for dependents) may luis and rosa claim on their year 3 joint income tax return? a. 6 b. 5 c. 4 d. 2

To be able to better compare stock performance within the same industry, similar companies are grouped into? a)market sectors b) industry blocks c) performance sectors d) average earning blocks

Amap from a trade development commission or chamber of commerce can be more useful than google maps for identifying