Economists often are interested in percentage change from one period to the next. the percentage rate of change of gross domestic product (gdp) is an important macroeconomic variable. if in 2010 gdp was $11,150 billion dollars, and gdp increased to $11 comma 788 billion in 2011, what is the growth rate of the u. s. economy in 2011? nothing%. (enter your response rounded to one decimal place.)

You are bearish on telecom and decide to sell short 100 shares at the current market price of $50 per share. a. how much in cash or securities must you put into your brokerage account if the broker’s initial margin requirement is 50% of the value of the short position? b. how high can the price of the stock go before you get a margin call if the maintenance margin is 30% of the value of the short position? (input the amount as a positive value. round your answer to 2 decimal places.)