What is the formula for calculating opportunity costs (output, input) ?

1.how is germany's economic system similar to that of the united kingdom a.both are free-market economic b.both are command economic c.both are mixed economic d.both are traditional economic

What activity is not one of the primary ways political parties shape public policy

Current events - by going to any of the major news sources on the internet, find out the issues that are being discussed in congress by searching under "politics." find a subject that interests you, tell what it is and explain what the issue is about. detail what the arguments are on each side of the question.