document.write( "Question 996210: Given f(x)=3x^2+x-1 and g(x)=4x+5, find (gf)(x). \r
\n" ); document.write( "\n" ); document.write( "A. 3x^2+5x+4
\n" ); document.write( "B. 12x^3+4x^2-4x
\n" ); document.write( "C. 12x^3+19x^2+x-5
\n" ); document.write( "D. 12x^3+19x^2+9x-5\r
\n" ); document.write( "\n" ); document.write( "Thank you
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Algebra.Com's Answer #614740 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "if \"+f%28x%29=3x%5E2%2Bx-1\" and \"g%28x%29=4x%2B5\",then\r
\n" ); document.write( "\n" ); document.write( "\"%28gf%29%28x%29=%283x%5E2%2Bx-1%29%284x%2B5%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%28gf%29%28x%29=3x%5E2%2A4x%2Bx%2A4x-1%2A4x%2B5%2A3x%5E2%2B5x-5\"\r
\n" ); document.write( "\n" ); document.write( "\"%28gf%29%28x%29=12x%5E3%2B4x%5E2-4x%2B15x%5E2%2B5x-5\"\r
\n" ); document.write( "\n" ); document.write( "\"%28gf%29%28x%29=12x%5E3%2B19x%5E2%2Bx-5\"\r
\n" ); document.write( "\n" ); document.write( "so your answer is: C. \"12x%5E3%2B19x%5E2%2Bx-5\"
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