document.write( "Question 917382: the cost in millions of dollars for a company to manufacture x thousand automobiles is given by the function C(x)=5x^2-20x+36. find the number of automobiles that must be produced to minimize the cost. \n" ); document.write( "
Algebra.Com's Answer #556635 by MathLover1(20850)\"\" \"About 
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C(x)=5x^2-20x+36. find the number of automobiles that must be produced to minimize the cost.\r
\n" ); document.write( "\n" ); document.write( "\"C%28x%29=5x%5E2-20x%2B36+\" ...this is a parabola opening upward, completing the square to find the
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\n" ); document.write( "\"C%28x%29=5x%5E2-20x%2B36+\" .........write \"36\" as \"20%2B16\"\r
\n" ); document.write( "\n" ); document.write( "\"c%28x%29=+5x%5E2-20x%2B20%2B16\" ...group\r
\n" ); document.write( "\n" ); document.write( "\"C%28x%29=+%285x%5E2-20x%2B20%29%2B16\"\r
\n" ); document.write( "\n" ); document.write( "\"C%28x%29=+5+%28x%5E2-4x%2B4%29%2B16\"\r
\n" ); document.write( "\n" ); document.write( "\"C%28x%29=+5+%28x-2%29%5E2%2B16\"\r
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\n" ); document.write( "\n" ); document.write( " Vertex(\"2\",\"16\") => \"x=+2\" OR \"2000\" automobiles\r
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