document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=86449>Question 86449</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534419410/algebrahomeworkh>Modeling, functions,and graphs</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\">  Hello, i was wondering if anyone could help me with this one problem.  I did get an answer but i wasnt sure if i was right.\r<BR>\n" );
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document.write( "The worlds copper reserves were 950 million tons in 2004; total annual consumption was 16.8 million tons.<BR>\n" );
document.write( "A- Assuming the copper consumption continues at the same level, write an equation for the remaining copper reserves, R , as a function of time, t (in years since 2004)\r<BR>\n" );
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document.write( "B-Find the intercepts and graph the function\r<BR>\n" );
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document.write( "C- what is the significance of the intercepts to the worlds copper supply? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #62540 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=62540\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The worlds copper reserves were 950 million tons in 2004; total annual consumption was 16.8 million tons.<BR>\n" );
document.write( "A- Assuming the copper consumption continues at the same level, write an equation for the remaining copper reserves, R , as a function of time, t (in years since 2004)<BR>\n" );
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document.write( "copper(in year) = -16.8(t) + 950<BR>\n" );
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document.write( "B-Find the intercepts and graph the function<BR>\n" );
document.write( "Let t=0, then copper reserve is 950 million tons<BR>\n" );
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document.write( "Let copper reserve be zero; then -16.5t = -950 <BR>\n" );
document.write( "t = 57.57 years; this means the copper reserve<BR>\n" );
document.write( "will disappear 57.57 years after 2004 or during<BR>\n" );
document.write( "the year 2062.<BR>\n" );
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document.write( "C- what is the significance of the intercepts to the worlds copper supply?<BR>\n" );
document.write( "Answered above.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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