document.write( "Question 1016141: I am quested with this one\r
\n" ); document.write( "\n" ); document.write( "f(x)=5x+4; g(x)=7x-1 and solve for (f*g)(3) I got 518 but that wasn't right\r
\n" ); document.write( "\n" ); document.write( "this is what I had35x²+23x-4 and when I put in 3 I got 518 but that was wrong. \n" ); document.write( "

Algebra.Com's Answer #632576 by MathTherapy(10549) $\"\"$ $\"About$

You can put this solution on YOUR website!

\n" ); document.write( "I am quested with this one\r
\n" ); document.write( "\n" ); document.write( "f(x)=5x+4; g(x)=7x-1 and solve for (f*g)(3) I got 518 but that wasn't right\r
\n" ); document.write( "\n" ); document.write( "this is what I had35x²+23x-4 and when I put in 3 I got 518 but that was wrong.
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(f*g)(3) = f(3) * g(3)\r
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document.write( "f(x) = 5x + 4
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document.write( "f(3) = 5(3) + 4
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document.write( "f(3) = 15 + 4, or 19\r
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document.write( "g(x) = 7x - 1
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document.write( "g(3) = 7(3) - 1
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document.write( "g(3) = 21 - 1, or 20\r
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document.write( "(f*g)(3) = f(3) * g(3) = 19(20), or \r
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document.write( "OR\r
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document.write( "It can also be done the way you did it, but I wouldn't, because the above is easier. 
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document.write( "Anyway, how did you come up with 518 when 3 was substituted for x? \n" );
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