Answer:
Efficiency requires that one lighthouse is built since the willingness to pay of all the residents together is larger than the cost of providing the lighthouse
Explanation:
Since the lighthouse is a public good, according to the coase theorem, if the combined willingness to pay for the lighthouse of all of the people living on the islands is higher than the cost of the lighthouse, then a lighthouse should be built.
The total willingness to pay is:

The population willingness to pay is higher than the cost of building one lighthouse ($2000) but lower than the cost of building two lighthouses ($4000). Therefore, efficiency requires that one lighthouse is built since the willingness to pay of all the residents together is larger than the cost of providing the lighthouse.
Spreadsheets are personal application software that includes a wide range of built-in functions for statistical, financial, logical, database, graphics, and date and time calculations. It is an application or program that is designed for analysis, organization and storing of data in a table form. It functions on data that are entered in the cells of a table where the cells can contain numeric or text values. In this program, you can input equations and relate cells in order to do automatic calculation. It helps in processing a large number of data since you can easily copy and execute functions and equations.
Answer:
c. generates income
Explanation:
International trade for a country refers to exchange of goods and services beyond geographical boundaries. In short international trade refers to the business due to import and export of goods.
For example, one nation might specialize in the production of cocoa while another nation is rich in oil wells or oil reserves. The two nations can trade such resources and eliminate scarcity or abundance.
International trade leads to increased competition in the domestic market since now the producers are compelled to adhere to meet international quality standards for their products.
So, International trade generally c. generates income.
<span>Through puberty the child's body matures into an adult body capable of sexual reproduction.</span>
For girls, the usual sequence of physical changes in puberty is nipple growth, the growth spurt, and menarche.
Girls pubertal changes<span> usually begin before boys of the same age.
</span>The pubic hair development comes shortly after breast development.
Geographic sales metrics would be most useful for him to review. This report assists visitor in locating insights based on geography. Users can recognize and react to top geographical trends quickly.
Geographic Sales Insights
This report assists visitor in locating insights based on geography. Users can recognize and react to top geographical trends quickly. The report includes information on the state, town, and ZIP code where your products were shipped. For a variety of reasons, differences between reports fragmented or clustered by geographic area and reviews without such segments or groups are to be expected. Some metrics, for example, may not be attributed to a specific geographical area, visits may not be included within small geographic areas, and spam filtering is not obtainable for reports segmented by geographic areas.
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