The current P/E ratio (price-to-earnings ratio) of a stock is defined as R= where P is the current market price of a single share of the stock and E is the earnings per share for the most recent 12-month period (a) What is the domain of the function R? (Enter your answers using interval notation.) P E (b) The earnings per share of IBM Corporation for 2011 were $13.09, and its price per share on March 19, 2012 was $205.56. What was the P/E ratio of IBM at that time?t (Round your answer to three decimal places.) R-
