document.write( "Question 393211: If f(0)=2 and f(x+1)=3 times f(x)-5 what is f(4) ? \n" ); document.write( "

Algebra.Com's Answer #279107 by josmiceli(19441) $\"\"$ $\"About$

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$\"f%280%29+=+2\"$
\n" ); document.write( " $\"f%28x+%2B+1%29+=+3%2A%28f%28x%29+-+5%29\"$
\n" ); document.write( "I can say that $\"x+=+0\"$ and $\"f%28x%29+=+2\"$
\n" ); document.write( " $\"f%281%29+=+3%2A%282+-+5%29\"$
\n" ); document.write( " $\"f%281%29+=+-9\"$
\n" ); document.write( "Now I'll say $\"x+=+1\"$ , $\"f%28x%29+=+-9\"$
\n" ); document.write( " $\"f%282%29+=+3%2A%28-9+-5%29\"$
\n" ); document.write( " $\"f%282%29+=+-42\"$
\n" ); document.write( "Set $\"x+=+2\"$ , $\"f%28x%29+=+-42\"$
\n" ); document.write( " $\"f%283%29+=+3%2A%28-42+-+5%29\"$
\n" ); document.write( " $\"f%283%29+=+-141\"$
\n" ); document.write( "Set $\"x+=+3\"$ , $\"f%28x%29+=+-141\"$
\n" ); document.write( " $\"f%284%29+=+3%2A%28-141+-+5%29\"$
\n" ); document.write( " $\"f%284%29+=+-438\"$ \n" ); document.write( "

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