document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1139365>Question 1139365</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Wind power is the conversion of wind energy into a useful form, such as electricity, using wind turbines. The wind power W installed in a certain country, in megawatts (MW), t years after 2004 can be approximated by W(t)=8733.4(1.406)^t, where t=0 corresponds to 2004. Answer the following. \r<BR>\n" );
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document.write( "a. What was the wind power capacity in 2006, in 2007, and in 2008?\r<BR>\n" );
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document.write( "b. Graph the function </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #759888 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=759888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the formula is w(t) = 8733.4 * 1.406 ^ t\r<BR>\n" );
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document.write( "t = 0 corresponds to 2004.\r<BR>\n" );
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document.write( "you want to know what the wind power was in 2006, 2007, and 2008.\r<BR>\n" );
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document.write( "that would be t = 2, 3, and 4.\r<BR>\n" );
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document.write( "that's based on the following table.\r<BR>\n" );
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document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">\r\n" );
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document.write( "year         t\r\n" );
document.write( "2004         0\r\n" );
document.write( "2005         1\r\n" );
document.write( "2006         2\r\n" );
document.write( "2007         3\r\n" );
document.write( "2008         4\r\n" );
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document.write( "</PRE>\r<BR>\n" );
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document.write( "you could also have done:\r<BR>\n" );
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document.write( "2006 - 2004 = 2<BR>\n" );
document.write( "2007 - 2004 = 3<BR>\n" );
document.write( "2008 - 2004 = 4\r<BR>\n" );
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document.write( "since 2004 is t = 0, then 2006 is t = 3 and 2007 is t = 4 and 2008 is t = 5.\r<BR>\n" );
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document.write( "the formula is w(t) = 8733.4 * 1.406 ^ t.\r<BR>\n" );
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document.write( "in 2004, that becomes 8733.4 * 1.406 ^ 0 = 8733.4<BR>\n" );
document.write( "in 2006, that becomes 8733.4 * 1.406 ^ 2 = 17264.49952<BR>\n" );
document.write( "in 2007, that becomes 8733.4 * 1.406 ^ 3 = 24273.88633<BR>\n" );
document.write( "in 2008, that becomes 8733.4 * 1.406 ^ 4 = 34129.08418.\r<BR>\n" );
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document.write( "if you let w(t) = y and you let t = x, then you can graph the function using the desmos.com calculator.\r<BR>\n" );
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document.write( "my graph is shown below.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2019/041911.jpg\" alt=\"$$$\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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