According to the map, which two cities did Mansa Musa visit on his pilgrimage? Cairo and Mecca
Tripoli and Algiers
Gao and Taghaza
Djenné and Timbuktu

How do corporate finances, investor expectations and external forces influence stock prices and possibly pose a risk to investors

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.

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