need some help with these three taxation questions.

5. A married couple making over $250,000 per year in wages, compensation and selfemployment income is subject to an additional Medicare tax of: % on those earnings above $250,000. 7. List the four tax courts of original jurisdiction: 1. 2. 3. 4. 8. When the Supreme Court of the United States agrees to hear a case involving Tax Law, it does so by issuing a