Exercise 13-25 (Algorithmic) (LO.7) Compute the additional Medicare tax for the following taxpayers. If required, round your answers to the nearest dollar. a. Mario, who is single, earns wages of $406,600. His additional Medicare tax is 4 b. George and Shirley are married and file a foint return. During the year, George earns wapes of $288,800, and 5 hirlev earns wages of \$433,200, Their additional Medicare tax is 4 c. Simen has net investment income of $47,640 and MAGI of $238,200 and files as a single taxpaver. Simon's additional Medicare tax is 1