document.write( "Question 1158575: average rate of change of the function g(x) = -x2 - 4x on the interval 6 ≤ x ≤ 8 ?
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Algebra.Com's Answer #781530 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "Definition of average rate of change a function \"g%28x%29\" over an interval [\"a\",\"b\"]:\r
\n" ); document.write( "\n" ); document.write( "\"A+=+%28g%28b%29-g%28a%29%29%2F%28b-a%29\"\r
\n" ); document.write( "\n" ); document.write( "given \"a=6\" and \"b=8\"\r
\n" ); document.write( "\n" ); document.write( "\"g%286%29+=+-x%5E2+-+4x=-6%5E2-4%2A6=-36-24=-60\"
\n" ); document.write( "\"g%288%29+=+-x%5E2+-+4x=-8%5E2-4%2A8=-64-32=-96\"\r
\n" ); document.write( "\n" ); document.write( "\"A+=+%28-96-%28-60%29%29%2F%288-6%29\"\r
\n" ); document.write( "\n" ); document.write( "\"A+=+%28-96%2B60%29%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"A+=+-36%2F2\"\r
\n" ); document.write( "\n" ); document.write( "\"A+=+-18\"\r
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