Why did isabella I and Ferdinand II pay for columbus's first journey

What is the rule relating the ratio of marginal utility to prices of two goods at the optimal choice? explain why, if this rule does not hold, the choice cannot be utility-maximizing.

Lots of points: economics: the dollar value consists of all of the goods and services sold by of each of the following entities except: a. government b. consumers c. unemployed d. net exports

What obstacles did jen bricker face early in life?