document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1077361>Question 1077361</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A football is kicked at 40 yards away from a goal post that is 10 feet high. Its path is modeled by y = -0.03x^2 + 1.6x, where x is the horizontal distance in yards traveled by the football and y is the corresponding height above the ground in feet.\r<BR>\n" );
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document.write( "Does the football go over the goal post? How far above or below the goal post is the football? Use two or more complete sentences to explain your answers. (Hint: The unit conversion is built into the given function.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #691900 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=691900\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A football is kicked at 40 yards away from a goal post that is 10 feet high.<BR>\n" );
document.write( " Its path is modeled by y = -0.03x^2 + 1.6x, where x is the horizontal distance in yards traveled by the football and y is the corresponding height above the ground in feet. <BR>\n" );
document.write( " Does the football go over the goal post? <BR>\n" );
document.write( " How far above or below the goal post is the football?<BR>\n" );
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document.write( "Solve for y when x = 40 yds<BR>\n" );
document.write( "y = -.03(40^2) + 1.6(40)<BR>\n" );
document.write( "y = -48 + 64<BR>\n" );
document.write( "y = 16 ft at 40yds, so it will clear the goal bar by 6 ft<BR>\n" );
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document.write( "Graphically, green line is 10ft<BR>\n" );
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