The total sales of a product, S, can be expressed as a function of the price p charged
Chapter 8, Problem 9(choose chapter or problem)
The total sales of a product, S, can be expressed as a function of the price p charged for the product and the amount, a, spent on advertising, so S = f(p, a). Do you expect f to be an increasing or decreasing function of p? Do you expect f to be an increasing or decreasing function of a? Why?
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