Derek just received a bonus and wishes to set aside a portion of it in order to save for a 10-year reunion cruise that his old college fraternity is sponsoring, 4 years from now. His broker says that he can buy a bond that matures in 4 years with an APY of 6%,The cost of the cruise is :

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?