Using formula: Marginal Utility=Change in Total Utility/Change in Quantity
<span>So, the marginal utility of each good will be 30/$2, or 15/$1.
Multiply this marginal utility by the price of each good/service to obtain the marginal utility per unit of good.</span>
<span>Since marginal utility of good A is given then by using this formula
the the marginal utility of good B is 60 , MU of good C is 45 and MU of good D is 15</span>
Answer:

Explanation:
this problem can be solved applying the concept of annuity, keep in mind that an annuity is a formula which allows you to calculate the future value of future payments affected by an interest rate.by definition the future value of an annuity is given by:

where
is the future value of the annuity,
is the interest rate for every period payment, n is the number of payments, and P is the regular amount paid
But there is an special thing to keep in mind and is the initial payment so we must to calculate the 4,000 in the future so we have:



The choice represent internalization theory.
<h3><u>
Explanation:</u></h3>
The outward movement of the operations of any firm can be defined as an internalization. Internalization is mainly carried out for the purpose of achieving advantages when a firm is located at foreign nations. This may be because there exists a larger market for a particular product in foreign nations.
Making investments at foreign regions also refers to internalization. The internalization theory of the firms that are multi nationally located has investments in intangible assets that has a public good properties. In the given example represents the internalization theory choice of economic theory.
Occasionally, barriers to entry may lead to pure monopoly; in other market conditions, they may limit competition to a few oligopoly firms
<h3>Do barriers to entry exist in a pure monopoly?</h3>
Due to entrance restrictions that deter prospective rivals, firms acquire monopolistic power. Barriers to entry, or conditions that make it difficult or impossible for potential competitors to participate in the market, give monopolies their market strength.
The four main elements of monopoly are: (1) a single business controlling the entire output of a market; (2) a distinctive product; (3) barriers to admission and departure from the industry; and, frequently (4) specialised knowledge about production methods that are not available to other potential producers.
Learn more about monopoly refer
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