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M110_Mt_RevF08[1] - Math 110 Midterm Review Bennett Fall...

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Math 110 Midterm Review – Bennett, Fall 2008 Use the graph of the function f to find approximations of the given values. 1. f (-1) 2. f (1) 3. f (-1) – f (1) 4. Find the equation of the line through (-1, 2) and (1, 0) 5. Find f ( 3) if f ( x ) = 3 x 2 2 x + 5 . 6. Besides selling books, you are generating additional revenue at OhaganBooks.com through your new online publishing service. Readers pay a fee to download the entire text of a novel. Author royalties and copyright fees cost you an average of $4 per novel, and the monthly cost of operating and maintaining the service amounts to $900 per month. You are currently charging readers $5.50 per novel. a. What are the associated cost, revenue, and profit functions? b. Ho many novels must you sell per month in order to break even? c. If you lower the charge to $5.00 per novel, how many books will you need to sell in order to break even? 7. In order to generate a profit from you online publishing service, you need to know how the demand for novels depends on the price you charge.
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