Listed here are product costs for the production of soccer balls. Classify each cost (a) as either variable (V) or fixed (F) and (b) as either direct (D) or indirect (I). What patterns do you see regarding the relation between costs classified in these two ways? b. Direct or Indirect Product Cost a. Variable or Fixed 1. Leather covers for soccer balls 2. Annual flat fee paid for office security. 3. Coolants for machinery.. 4. Wages of assembly workers. 5. Thread to hold leather together 6. Taxes on factory 7. Machinery depreciation (stralght-line) .**

Total marketing effort is a term used to describe the critical decision factors that affect demand: price, advertising, distribution, and product quality. define the variable x to represent total marketing effort. a typical model that is used to predict demand as a function of total marketing effort is based on the power function: d = axb suppose that a is a positive number. different model forms result from varying the constant b. sketch the graphs of this model for b = 0, b = 1, 0< b< 1, b< 0, and b> 1. (we encourage you to use excel to do this.) what does each model tell you about the relationship between demand and marketing effort? what assumptions are implied? are they reasonable? how would you go about selecting the appropriate model?