document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=38003>Question 38003</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this problem.\r<BR>\n" );
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document.write( "The basal energy requirement B is the number of calories that a person needs to maintain the life process.  For a 28-year old female with a height of 160 centimeters and a weight of 45 kilograms (kg), B is 1300 calories.  If her weight increases to 50kg, then B is 1365 calories. There is a linear equation that expresses B in terms of her weight w.  Find the equation and find the basal energy requirements if her weight is 53.2kg. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #23491 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=23491\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You are given 2 data points, like two x and y's...you find the equation of a line the same way...<BR>\n" );
document.write( "Here our data points are (45, 1300) and (50, 1365).  First find slope...<BR>\n" );
document.write( "m = (1365 - 1300) / (50 - 45)<BR>\n" );
document.write( "m = 65 / 5<BR>\n" );
document.write( "m = 13<BR>\n" );
document.write( "Now use the point slope form to get the equation...<BR>\n" );
document.write( "y - 1300 = 13(x - 45)<BR>\n" );
document.write( "y - 1300 = 13x - 585<BR>\n" );
document.write( "y = 13x + 715<BR>\n" );
document.write( "Now if her weight was 53.2, plug that in for x and calculate y...<BR>\n" );
document.write( "y = 13(53.2) + 715 =<BR>\n" );
document.write( "y = 1406.6 calories </SPAN>\n" );
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