document.write( "Question 1189352: If a store prices each book at $x, (64 − 8𝑥) books will be sold.
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Algebra.Com's Answer #820695 by ikleyn(52780) $\"\"$ $\"About$

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document.write( "The total amount of money y, earned from the sale of (64-8x) books, equals\r\n" );
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document.write( "to the product of the number of books (64-8x), by the price of each book x\r\n" );
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document.write( "    y = (64-8x)*x,\r\n" );
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document.write( "or\r\n" );
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document.write( "    y = 64x - 8x^2,\r\n" );
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document.write( "which is the same as\r\n" );
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document.write( "    y = -8x^2 + 64x.\r\n" );
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