document.write( "Question 132987: If f(x) = (x + 48.2)3, what does f−1(−8) equal?
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Algebra.Com's Answer #97205 by vleith(2983)\"\" \"About 
You can put this solution on YOUR website!
Based on your recent note, the problem is asking for the inverse function of
\n" ); document.write( "\"f%28x%29+=+%28x+%2B+48.2%29%5E3\"\r
\n" ); document.write( "\n" ); document.write( "First, replace \"f%28x%29\" with y.\r
\n" ); document.write( "\n" ); document.write( "\"y+=+%28x+%2B+48.2%29%5E3\"\r
\n" ); document.write( "\n" ); document.write( "Now, solve for x.
\n" ); document.write( "\"cuberoot%28y%29+-48.2+=+x\"\r
\n" ); document.write( "\n" ); document.write( "Reorder as
\n" ); document.write( "\"x+=+cuberoot%28y%29+-48.2\"\r
\n" ); document.write( "\n" ); document.write( "Finally, replace every x with y and every y with x as follows:\r
\n" ); document.write( "\n" ); document.write( "\"y+=+cuberoot%28x%29-48.2\"\r
\n" ); document.write( "\n" ); document.write( "That is the inverse function\r
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\n" ); document.write( "\n" ); document.write( "Now solve when x = (-8)
\n" ); document.write( "\"y+=+cuberoot%28x%29+-48.2\"
\n" ); document.write( "\"y+=+cuberoot%28-8%29+-+48.2\"
\n" ); document.write( "\"y+=+-2+-+48.2\"
\n" ); document.write( "y = -50.2\r
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