document.write( "Question 91997: Can someone check my work. You can't imagine how grateful I am to this site and to all of the tutors. I am able to see step by step my mistakes. thank you.\r
\n" ); document.write( "\n" ); document.write( "state the domain...I think I have it...maybe
\n" ); document.write( "f(x) = sq rt x+4
\n" ); document.write( " x + 4 = 0 - 4
\n" ); document.write( " x = -4 is the domain???\r
\n" ); document.write( "\n" ); document.write( "g(x) = 2x+1/x-3
\n" ); document.write( " x-3= 0
\n" ); document.write( " x - 3 = 0 + 3
\n" ); document.write( " x = 3\r
\n" ); document.write( "\n" ); document.write( "h(x)= 3x^2 + 5x - 3
\n" ); document.write( " all of the numbers are real, correct?
\n" ); document.write( " or
\n" ); document.write( " 9x + 5x -3
\n" ); document.write( " 14x-3 = 0
\n" ); document.write( " that's not right\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "l(x) = 2x + 3
\n" ); document.write( " D = all real numbers\r
\n" ); document.write( "\n" ); document.write( "m(x) = 3/x^2 + 7
\n" ); document.write( " x + 7 = 0
\n" ); document.write( " x + 7 = 0 - 7
\n" ); document.write( " x = -7
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #66816 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
state the domain...I think I have it...maybe
\n" ); document.write( "f(x) = sqrt(x+4)
\n" ); document.write( "x=4 must be >=0
\n" ); document.write( "x must be >= -4
\n" ); document.write( "Domain: all Real Numbers >=-4
\n" ); document.write( "----------------------\r
\n" ); document.write( "\n" ); document.write( "g(x) = 2x+1/x-3
\n" ); document.write( "The denominator must not be zero.
\n" ); document.write( "Domain: all Real Numbers except x=3
\n" ); document.write( "---------------------------------\r
\n" ); document.write( "\n" ); document.write( "l(x) = 2x + 3
\n" ); document.write( "Domain: all real numbers
\n" ); document.write( "That's correct.
\n" ); document.write( "---------------------- \r
\n" ); document.write( "\n" ); document.write( "m(x) = 3/(x^2 + 7)\r
\n" ); document.write( "\n" ); document.write( "The denominator must not be zero.
\n" ); document.write( "It never is because x^2 >=0 so x^2+7>=7.
\n" ); document.write( "Domain: all Real Numbers
\n" ); document.write( "----------------
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( "
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