document.write( "Question 1037635: Suppose that the functions r and s
\n" ); document.write( " are defined for all real numbers x
\n" ); document.write( " as follows.\r
\n" ); document.write( "\n" ); document.write( "r(x)=2x+6
\n" ); document.write( "s(x)=3x\r
\n" ); document.write( "\n" ); document.write( "write the expression for (r+s)(x),(r-s)(x) and evaluate (r*s)(-1) \n" ); document.write( "

Algebra.Com's Answer #652362 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "Suppose that the functions r and s
\n" ); document.write( " are defined for all real numbers x
\n" ); document.write( " as follows.\r
\n" ); document.write( "\n" ); document.write( "r(x)=2x+6
\n" ); document.write( "s(x)=3x\r
\n" ); document.write( "\n" ); document.write( "write the expression for (r+s)(x),(r-s)(x) and evaluate (r*s)(-1)
\n" ); document.write( "

(r * s)(- 1) means: r(- 1) * s(- 1)\r
\n" );
document.write( "\n" );
document.write( "r(x) = 2x + 6
\n" );
document.write( "r(- 1) = 2(- 1) + 6, or 4\r
\n" );
document.write( "\n" );
document.write( "s(x) = 3x
\n" );
document.write( "s(- 1) =3(- 1), or - 3\r
\n" );
document.write( "\n" );
document.write( "(r * s)(- 1) = r(- 1) * s(- 1) = 4(- 3) =  \n" );
document.write( "

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