2)The expansion of exchange networks between 600-1450 resulted in the growth of interregional trade in luxury goods. Which of the following were some of the most influential luxury goods during that period?

It is c) binge drinking alcohol 

See diagram.we use washers to get the area and we will be integrating with respect to xouter radius is the  distance between y = e^x and y = -1    inner radius of washer is the distance between y = 1 and y = -1    the area of one cross-section of a washer is    solid lies between x = 0 and x = 2. the volume is    if you need this expanded, then    the question doesn't say to evaluate, so we're done.   

Answerquantity demanded of compact disc players has decreased///good luck

How are we suppose to know this