document.write( "Question 623240: The average retail price of the cookbook will be $30, and the average cost will be $20.
\n" ); document.write( "Assume that the equation for demand is Q = 50,000 – 900P, where
\n" ); document.write( "Q = the number of cookbooks sold per month
\n" ); document.write( "P = the retail price of books.
\n" ); document.write( "Show what the demand curve would look like if you sold the books between $25 and $35.
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Algebra.Com's Answer #392010 by Theo(13342)\"\" \"About 
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average retail price = $30
\n" ); document.write( "average cost = $20
\n" ); document.write( "Q = 50,000 - 900P
\n" ); document.write( "Q = number of cookbooks sold per month.
\n" ); document.write( "P = retail price of books.
\n" ); document.write( "let y = Q and let x = P and you can graph this equation.
\n" ); document.write( "your equation for graphing is y = 50,000 - 900x
\n" ); document.write( "graph looks like this:
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\n" ); document.write( "when the price is 25 dollars, 27500 books are sold.
\n" ); document.write( "when the price is 35 dollars, 18500 books are sold.
\n" ); document.write( "at 25.00 per book, the revenue is 687500 and the profit is 137500.
\n" ); document.write( "at 35.00 per book, the revenue is 647500 and the profit is 277500.
\n" ); document.write( "since the cost is 20, the profit per book at 25 per book is 5.00.
\n" ); document.write( "since the cost is 20, the profit per book at 35 per book is 15.00.
\n" ); document.write( "sell less books at 35.00 per book but make more profit based on this equation.
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