document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=597401>Question 597401</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A car’s speed is 30 miles per hour, and it begins to slow down at a constant rate of 6 miles per hour every 4 seconds.<BR>\n" );
document.write( "a) Write a linear function that relates the speed of the car S with the time since it began slowing down t.<BR>\n" );
document.write( "b) How fast will the car be going after 10 seconds? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #378182 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=378182\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (a)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+30+ ALIGN=MIDDLE  ALT=\"+30+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/hr = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+30%2F3600+ ALIGN=MIDDLE  ALT=\"+30%2F3600+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/sec<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+30%2F3600+=+.008333+ ALIGN=MIDDLE  ALT=\"+30%2F3600+=+.008333+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/sec<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+.008333+-+%28+6+%2F+%28+4%2A3600+%29%29+%2At+ ALIGN=MIDDLE  ALT=\"+S+=+.008333+-+%28+6+%2F+%28+4%2A3600+%29%29+%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+.008333+-+%28+3+%2F+%28+2%2A3600+%29%29+%2At+ ALIGN=MIDDLE  ALT=\"+S+=+.008333+-+%28+3+%2F+%28+2%2A3600+%29%29+%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+.008333+-+.0004166t+ ALIGN=MIDDLE  ALT=\"+S+=+.008333+-+.0004166t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/sec<BR>\n" );
document.write( "--------------------------<BR>\n" );
document.write( "(b)<BR>\n" );
document.write( "After 10 sec:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+.008333+-+.0004166%2A10+ ALIGN=MIDDLE  ALT=\"+S+=+.008333+-+.0004166%2A10+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  mi/sec<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+.008333+-+.004166+ ALIGN=MIDDLE  ALT=\"+S+=+.008333+-+.004166+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/sec<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+.004167+ ALIGN=MIDDLE  ALT=\"+S+=+.004167+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/sec<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+.004167%2A3600+ ALIGN=MIDDLE  ALT=\"+S+=+.004167%2A3600+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ( mi/sec )x( sec/hr )<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+S+=+15.001+ ALIGN=MIDDLE  ALT=\"+S+=+15.001+\"   DISABLED_style= \"max-width:90%; height:auto;\" > mi/hr<BR>\n" );
document.write( "The car will be going about 15 mi/hr<BR>\n" );
document.write( "   </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );