Chen C.

asked • 06/22/19

find an equation

Suppose a college bookstore sells 919 copies of a new (not used) textbook in 2007. Each year from 2007 to 2009, new-textbook sales are half of the previous year's sales (due to used-textbook sales). Let s=g(t) be the sales of copies of the new textbook in the year that is t years since 2007. 


Find an equation of g

g(t)=


What is the s-intercept of the model? What does it mean in this situation? 



Find 

g(2)

. What does it mean in this situation? 


What is the half-life of new-textbook sales?

___years

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