document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=408199>Question 408199</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How would I verify P-1(P(450)) = 450.\r<BR>\n" );
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document.write( "the orignal function is P(x)= 8.5x - 2500<BR>\n" );
document.write( "and the inverse function is x+2500/8.5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #287699 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=287699\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> We already know that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%5E%28-1%29+%28P%28450%29%29+=+450 ALIGN=MIDDLE  ALT=\"P%5E%28-1%29+%28P%28450%29%29+=+450\"   DISABLED_style= \"max-width:90%; height:auto;\" > since if you apply a function to some value x, then apply the inverse of the function, you will get x. It's basically the definition of an inverse function. Also, the function is one-to-one so there won't be any extraneous solutions. </SPAN>\n" );
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