Suppose US$1 = €0.7809 in New York and US$1 = €0.7793 in Paris. How can foreign exchange traders profit from these exchange rates? What actions can they take that may result in the same dollar/euro exchange rate in both New York and Paris? Please limit your response to one or two reasonably-sized paragraphs.

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?