document.write( "Question 355823: I do not understand what the symbol is that looks like a multiplication symbol but is open like a miniature o. I looked in my book and found that it means something like (f o g)(x) = f(g(x)). Like here is an example problem...\r
\n" ); document.write( "\n" ); document.write( "(f o h)(x),if f(x)=2x, g(x)=3x, and h(x)=4\r
\n" ); document.write( "\n" ); document.write( "or (f o g)(4), let f(x)=3x-2 and g(x)=x^2+x\r
\n" ); document.write( "\n" ); document.write( "I know I am not really attempting to answer the question, but I don't understand it to try to answer. Please help me!! I have a math test tonight!! \n" ); document.write( "
Algebra.Com's Answer #254057 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!
HI,
\n" ); document.write( "You are absolutely correct (f 0 g)(x) means for every x in the f(x) function, g(x) has been substituted for it.
\n" ); document.write( ".
\n" ); document.write( "f(x)=2x & h(x)= 4
\n" ); document.write( ".
\n" ); document.write( "(note put the '4' in place of the x in the f(x) function)
\n" ); document.write( "(f o h)(x)= 2(4) = 8
\n" ); document.write( ".
\n" ); document.write( "(f o g)(4), let f(x)=3x-2 and g(x)=x^2+x
\n" ); document.write( ".
\n" ); document.write( "substitute x^2+x for x in the (3x-2) expresion
\n" ); document.write( "(f o g)(4) = (3(x^2+x)-2
\n" ); document.write( ".
\n" ); document.write( "solve for x = 4
\n" ); document.write( "(f o g)(4) = 3*(20)-2 = 58
\n" ); document.write( " \n" ); document.write( "
\n" );