What is the relationship between average total cost, average variable cost, and average fixed cost? If average total cost is $5.76 and average fixed cost is $1.35, what is the level of average variable cost?

The practice of tenure at American universities is quite common

When a junior professor is approved for tenure he or she is promoted to associate or full professor and enjoys for all intents and purposes lifetime employment and protection against firing in the event that he or she's views are at odds with the university administration. While this policy has been in place for many decades across the country why is it that universities are hesitant to grant and do so only after careful evaluation of the candidate's work even though the salary they may have to contract is lower than what one might receive in the private sector.

Economic analysis indicates that the monetary policy of the 1930s, which shifted back and forth between restrictive monetary policy and expansionary monetary policy, would likely result in

a. economic stability and growth in real levels of output. b. keeping the general level of prices relatively stable because the periods of restrictive policy would just offset the periods of expansion. c. an environment of uncertainty, which would lead to economic instability. d. economic stability, because changes in monetary policy can be counted on to exert a predictable impact on the economy quickly.