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Which is NOT another name for an action potential?

In which of the following cases will total revenue increase?

Answer questions 49-50 using the information contained in the following graph.

Which of the following is correct?

The diamond-water paradox occurs because:

Part II (20 points) Answer the required question and any three of the optional questions below.  Be sure to provide a detailed explanation of your answers — no explanation, no credit. Required Question  (#51) Observers sometimes contend that when producers experience a tax or other cost increase, they simply will pass this increase on to consumers in the form of higher prices, thereby experiencing none of the burden themselves. What role might price elasticity of demand play in determining whether or not this contention is valid.  Explain carefully in two or three sentences.  (8) Optional Questions (52, 53, 54–answer 3 of the 4 below) Note: If you answer more than three questions among the ones that follow, only the first three answered will be graded.  Be sure to use the number below (1, 2, 3, or 4) to indicate which question you are answering. In international trade, Comparative Advantage simply means that every country should do (or produce) that which it does (or producers) best.  True or false?  Explain. (4) Do protective tariffs, imposed with the idea of protecting certain industries, actually save jobs in the economy overall? Explain. (4) A strong American dollar is beneficial for everyone in America. True or false?  Explain. (4) What is the important difference between marginal utility theory (cardinal utility) and indifference curve theory (ordinal utility)? Does one have more potential for practical application and, if so, why? (4)  

Supply curves tend to be:

Refer to the above data. What quantities of X and Y should be purchased to maximize utility?

We would expect the cross elasticity of demand between Pepsi and Coke to be:

Place the question number and answer to the essay question you selected below.