__________ is the proclaimed right of a state to declare a federal law void

When a concept is directly or indirectly observable, it is said to have which of the following?

a.) assumptions b.) a concept c.) reactivity d.) empirical referents

How long do justices of the U.S. Supreme Court serve?

A) four-year terms with no reappointment B) four-year terms but may be reappointed C) eight-year terms D) twenty-year terms E) for a term of "good behavior"