Sergei had to decide among watching a two-hour movie with a cost of $20, buying a book to read for $10 that would take about four hours to read, and going to a three-hour concert for $30. If he considers the benefit of each situation to be proportional to the amount of time, with a value of about $50 per hour, what is the opportunity cost of the best decision?(1 point) $150

$120

$80

$190

Which of the following statements is true regarding the definition of a fund? a fund is a fiscal entity which is designed to provide reporting that demonstrates conformance with finance-related legal and contractual provisions separately from gaap reporting. a fund exists to assist in carrying on activities and attaining objectives where there are no specific rules or restrictions. a fund is an accounting entity which is designed to enable reporting in conformity with gaap without being restricted by legal or contractual provisions. a fund is a mechanism developed to provide accounting for revenues and expenditures that are subject to certain restrictions separate from revenues and expenditures that are not subject to restrictions.

Which of the following is a problem for the production of public goods?

Gary lives in an area that receives high rainfall and thunderstorms throughout the year. which device would be useful to him to maintain his computer?