document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=992495>Question 992495</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An adult blue whale can eat 4.0 x 10^7 krill in a day. At that rate, how many krill can an adult blue what eat in 3.65 x 10^2 days? Please explain </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #612102 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=612102\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If you have a time to achieve a certain amount (such as a time to go a distance),<BR>\n" );
document.write( "and a rate (such as a speed),<BR>\n" );
document.write( "to find the amount you achieve (such as how far you can go) you multiply time and rate.<BR>\n" );
document.write( "Of course, you have to mind your units, to match the units of time in your time and your rate<BR>\n" );
document.write( "For example, to find how far you will go<BR>\n" );
document.write( "driving 90minutes (1.5hours)<BR>\n" );
document.write( "at 50 miles per hour, you multiply<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281.5hours%29%2A%2850miles%2F%221+hour%22%29=75miles ALIGN=MIDDLE  ALT=\"%281.5hours%29%2A%2850miles%2F%221+hour%22%29=75miles\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "In this case, to find how many krill that whale will eat in one year, you calculate<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%223.65+x+10%5E2+days%22%29%2A%28%224.0+x+10%5E7+krill%22%2F%221+day%22%29=%283.65%2A10%5E2%29%284.0%2A10%5E7%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=krill=14.6%2A10%5E9 ALIGN=MIDDLE  ALT=\"krill=14.6%2A10%5E9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=krill=highlight%281.46%2A10%5E10%29 ALIGN=MIDDLE  ALT=\"krill=highlight%281.46%2A10%5E10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=krill ALIGN=MIDDLE  ALT=\"krill\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=or ALIGN=MIDDLE  ALT=\"or\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%281.5%2A10%5E10%29 ALIGN=MIDDLE  ALT=\"highlight%281.5%2A10%5E10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=krill ALIGN=MIDDLE  ALT=\"krill\"   DISABLED_style= \"max-width:90%; height:auto;\" > .<BR>\n" );
document.write( "The factor 4.0 x 10^7 krill/day is given with 2 significant digits,<BR>\n" );
document.write( "meaning that the rate is between 3.95 x 10^7 krill/day and 4.15 x 10^7 krill/day, and maybe your teacher would like you to show the answer with<BR>\n" );
document.write( "less precision that your data,<BR>\n" );
document.write( "as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.5%2A10%5E10 ALIGN=MIDDLE  ALT=\"1.5%2A10%5E10\"   DISABLED_style= \"max-width:90%; height:auto;\" > krill , meaning somewhere between <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.45%2A10%5E10 ALIGN=MIDDLE  ALT=\"1.45%2A10%5E10\"   DISABLED_style= \"max-width:90%; height:auto;\" > krill  and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.55%2A10%5E10 ALIGN=MIDDLE  ALT=\"1.55%2A10%5E10\"   DISABLED_style= \"max-width:90%; height:auto;\" > krill.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "NOTE: In science, sometimes we would keep an extra significant figure so as not to loose information, even if we are not completely certain. We do that when we may use that result in further calculations. The drug content calculated for 10 individually analyzed tablets is one example. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );