document.write( "Question 201680: Evaluate the function.\r
\n" ); document.write( "\n" ); document.write( "given that f(x) = sqrt (-5x) , find f(-k).
\n" ); document.write( " A) sqrt (kx)
\n" ); document.write( " B) sqrt (5k)
\n" ); document.write( " C) sqrt (-5k)
\n" ); document.write( " D) sqrt (-kx)
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Algebra.Com's Answer #151932 by Alan3354(69443)\"\" \"About 
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Evaluate the function.
\n" ); document.write( "given that f(x) = sqrt (-5x) , find f(-k).
\n" ); document.write( "------------
\n" ); document.write( "Sub -k for x
\n" ); document.write( "f(-k) = sqrt(-5*-k)
\n" ); document.write( "f(-k) = sqrt(5k)
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