Danny owns an electronics outlet in Dallas. This year, he paid $600 to register for a four-day course in management in Chicago. Danny paid $800 in airfare and $1,000 for five nights' lodging. After the course, Danny spent the last day sightseeing. During the trip, Danny also paid $140 a day for meals at restaurants, and $80 a day for a rental car. What amount of these travel expenditures may Danny deduct as business expenses

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?