During a local campaign, eight republicans and five democratic candidates are nominated for president of the school board. if the president is to be one of these candidates, how many possibilities are there for the eventual winner?

13

Explanation:

Given

During a local campaign 8 republicans and 5 democratic candidates are nominated for president of the school Board.

If the president is to be one of these candidates then

there can be ways to select a president

can be expanded to

therefore

Therefore there can be 13 ways to do it.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.