between 100,000 and 250,000 per day. The coefficient 1.85 is the slope of the first formula, measured in books sold per thousand visitors. Thus, book sales are decreasing at a rate of 1.85 books per thousand new visitors when the number of visitors is between 0 and 100,000 per day. (c) According to the model, approximately how many visitors per day will be needed to sell an average of 300 books per day? (Round your answer to the

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As OHaganBooks.com has grown in popularity, the sales manager has been monitoring book sales as a function of the website traffic (measured in thousands of visits per day) and has obtained the following model
s(x) = 
 
1.65x        if 0 ≤ x ≤ 100
1.85x  −  20    if 100 < x ≤ 250,
where s(x) is the average number of books sold in a day in which there are x thousand visitors.
(a)
On average, how many books per day does the model predict that OHaganBooks.com will sell when it has 60,000 visits in a day?
books
On average, how many books per day does the model predict that OHaganBooks.com will sell when it has 100,000 visits in a day?
books
On average, how many books per day does the model predict that OHaganBooks.com will sell when it has 160,000 visits in a day?
books
(b)
What does the coefficient 1.85 tell you about book sales?
The coefficient 1.85 is the intercept of the first formula, measured in books sold per thousand visitors. Thus, if there were 0 visitors we would expect to sell 1.85 books. The coefficient 1.85 is the slope of the first formula, measured in books sold per thousand visitors. Thus, book sales are increasing at a rate of 1.85 books per thousand new visitors when the number of visitors is between 0 and 100,000 per day.     The coefficient 1.85 is the slope of the second formula, measured in books sold per thousand visitors. Thus, book sales are increasing at a rate of 1.85 books per thousand new visitors when the number of visitors is between 100,000 and 250,000 per day. The coefficient 1.85 is the slope of the second formula, measured in books sold per thousand visitors. Thus, book sales are decreasing at a rate of 1.85 books per thousand new visitors when the number of visitors is between 100,000 and 250,000 per day. The coefficient 1.85 is the slope of the first formula, measured in books sold per thousand visitors. Thus, book sales are decreasing at a rate of 1.85 books per thousand new visitors when the number of visitors is between 0 and 100,000 per day.
(c)
According to the model, approximately how many visitors per day will be needed to sell an average of 300 books per day? (Round your answer to the nearest thousand visitors.)
thousand visitors per day
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