1. Define marginal valuation?

2. = z.Mathieu wants to buy coffees. It has the following valuations: V(1) = $6, V(2) = $11, V(3) = $15, V(4) = $18, and V(5) = $20. If the price of a coffee is $3, how many coffees will he buy? Explain.

3.Michle gets a promotion and her annual income goes from $30,000 to $30,500. His annual purchases of potatoes increase from six to eight bags. Based on this information, are potatoes an inferior good or a normal good for Michele? Explain.

4.True or false? In economics, a short-term horizon designates the period during which all the factors of production are variable?

5.True or false? In the Cournot model, one of the firms enjoys a dominant position which allows it to act first. Explain.