document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1189298>Question 1189298</A>: <I><SPAN STYLE=\"word-break: break-all;\"> . In testing an experimental diet for hens, it was determined that the average live<BR>\n" );
document.write( "weight w (in grams) of a hen was statistically a linear function of the number of days d after<BR>\n" );
document.write( "the diet began, where 0 ≤ d ≤ 50. Suppose the average weight of a hen beginning the diet<BR>\n" );
document.write( "was 40 grams and 25 days later it was 675 grams.<BR>\n" );
document.write( "(a) Determine w as a linear function of d. Clearly illustrate your steps. (20 marks)<BR>\n" );
document.write( "(b) Sketch the graph of this linear function by hand. Clearly indicate the points you<BR>\n" );
document.write( "used to locate this line, as well as the y-intercept of the line. (30 marks)<BR>\n" );
document.write( "(c) Find the average weight of a hen when d=10. (10 marks) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #820679 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=820679\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> rate of change is x gm/day<BR>\n" );
document.write( "40 gm + x gm/day*25days=675 gm<BR>\n" );
document.write( "25x=635<BR>\n" );
document.write( "x=25.4 gms/day slope<BR>\n" );
document.write( "---<BR>\n" );
document.write( "when x=0, y=40 (y-intercept is 40 gms)<BR>\n" );
document.write( "when x=5 y=167<BR>\n" );
document.write( "when d=10, wt=y=294 gms<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-15%2C30%2C-45%2C800%2C675%2C40%2B25x%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-15%2C30%2C-45%2C800%2C675%2C40%2B25x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );