document.write( "Question 48060: find the domain of f(x)=7+ sqrt (3x+21), and express it using interval notation.\r
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Algebra.Com's Answer #31808 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
f(x)=7+ sqrt (3x+21)\r
\n" ); document.write( "\n" ); document.write( "The 3x+21 must not be negative.
\n" ); document.write( "So, 3x+21>=0
\n" ); document.write( "3x>=-21
\n" ); document.write( "x>=-7\r
\n" ); document.write( "\n" ); document.write( "The domain is all Real Numbers greater than or equal to -7.\r
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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