document.write( "Question 333696: Given the function f(x) = x + 3x + 4 , find the value of f(–1). \n" ); document.write( "
Algebra.Com's Answer #239118 by vleith(2983)\"\" \"About 
You can put this solution on YOUR website!
\"f%28x%29+=+x+%2B+3x+%2B+4\"
\n" ); document.write( "\"f%28-1%29+=+%28-1%29+%2B+3%2A%28-1%29+%2B+4\"
\n" ); document.write( "\"f%28-1%29+=+-1+-+3+%2B+4\"
\n" ); document.write( "\"f%28-1%29+=+-4+%2B4\"
\n" ); document.write( "\"f%28-1%29+=+0\"
\n" ); document.write( "
\n" );