
Concept explainers
The sales of a book tend to increase over the short-term as word-of-mouth makes the book “catch on.� The number of books sold
a. Find a model of the form
b. Use the model to predict the sales in week 7. Round to the nearest whole unit.
c. Is it reasonable to assume that this logarithmic trend will continue? Why or why not?

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Chapter 3 Solutions
Precalculus
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