2-30 Variable- and Fixed-Cost Behavior Refer to Exhibits 2-2 and 2-3 on pages 38 and 39. Part of a company's marketing function is as described in Exhibit 2-2. Two of the many marketing-function activities are advertising and selling. The annual cost behavior of the resources used to perform the advertising activity is depicted in the following diagram. With respect to the cost driver number of advertisements, which of the two costs CHAPTER 2 . INTRODUCTION TO COST BEHAVIOR AND COST-VOLUME-PROFIT RELATIONSHIPS 69 is fixed? Which cost is variable? What is the total cost of advertising if the number of advertisements is 467 92? Does the total cost of advertising double in response to a doubling of the cost driver level? Why or why not