document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=37589>Question 37589</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone help me with these questions please?\r<BR>\n" );
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document.write( "A principal of $5000 was invested in a savings account for 4 years.  If the interest earned for the period was $400, what was the interest rate?  \r<BR>\n" );
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document.write( "Allen bought 20 stamps at the post office in 37¢ and 20¢ denominations.  If the total cost of the stamps was $7.06, how many 37¢ stamps did Allen buy?\r<BR>\n" );
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document.write( "The perimeter of a rectangle is to be no greater than 300 in., and the length must be 125 in.  Find the maximum width of the rectangle.\r<BR>\n" );
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document.write( "One number is 8 less than another.  If 5 times the smaller number minus 2 times the larger number is 14, find the two numbers.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #23202 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=23202\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A principal of $5000 was invested in a savings account for 4 years.  If the interest earned for the period was $400, what was the interest rate?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28a%29=a%281%2Br%29%5Et ALIGN=MIDDLE  ALT=\"P%28a%29=a%281%2Br%29%5Et\"   DISABLED_style= \"max-width:90%; height:auto;\" > your equation for interest<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5400=5000%281%2Br%29%5E4 ALIGN=MIDDLE  ALT=\"5400=5000%281%2Br%29%5E4\"   DISABLED_style= \"max-width:90%; height:auto;\" > where <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%28a%29 ALIGN=MIDDLE  ALT=\"P%28a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is final amount; <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a ALIGN=MIDDLE  ALT=\"a\"   DISABLED_style= \"max-width:90%; height:auto;\" > is initial amount; <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r ALIGN=MIDDLE  ALT=\"r\"   DISABLED_style= \"max-width:90%; height:auto;\" > is rate; and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t ALIGN=MIDDLE  ALT=\"t\"   DISABLED_style= \"max-width:90%; height:auto;\" > is time<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281.08%29=%281%2Br%29%5E4 ALIGN=MIDDLE  ALT=\"%281.08%29=%281%2Br%29%5E4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.0194=1%2Br ALIGN=MIDDLE  ALT=\"1.0194=1%2Br\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.0194=r ALIGN=MIDDLE  ALT=\"0.0194=r\"   DISABLED_style= \"max-width:90%; height:auto;\" > the rate was about 1.94%<BR>\n" );
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document.write( "Allen bought 20 stamps at the post office in 37¢ and 20¢ denominations.  If the total cost of the stamps was $7.06, how many 37¢ stamps did Allen buy?<BR>\n" );
document.write( "define variables:<BR>\n" );
document.write( "s=amount of 20¢<BR>\n" );
document.write( "l=amount of 37¢<BR>\n" );
document.write( "define equations:<BR>\n" );
document.write( "s+l=20<BR>\n" );
document.write( "0.2s+.37l=7.06<BR>\n" );
document.write( "combine:<BR>\n" );
document.write( "s=20-l<BR>\n" );
document.write( "so....<BR>\n" );
document.write( "0.2(20-l)+.37l=7.06<BR>\n" );
document.write( "4-.2l+.37l=7.06<BR>\n" );
document.write( ".17l=3.06<BR>\n" );
document.write( "l=18 Allen bought eighteen 37¢ stamps.<BR>\n" );
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document.write( "The perimeter of a rectangle is to be no greater than 300 in., and the length must be 125 in.  Find the maximum width of the rectangle.<BR>\n" );
document.write( "perimeter<2(length)+2(width)<BR>\n" );
document.write( "300>2(125)+2(w)<BR>\n" );
document.write( "300>250+2w<BR>\n" );
document.write( "50>2w<BR>\n" );
document.write( "25>w the maximum width must be less than twenty five .... (if you only concidered integer values, than the value would be 24)<BR>\n" );
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document.write( "One number is 8 less than another.  If 5 times the smaller number minus 2 times the larger number is 14, find the two numbers.<BR>\n" );
document.write( "define variables:<BR>\n" );
document.write( "l=larger number<BR>\n" );
document.write( "s=smaller number<BR>\n" );
document.write( "create equations:<BR>\n" );
document.write( "l-8=s<BR>\n" );
document.write( "5s-2l=14<BR>\n" );
document.write( "combine:<BR>\n" );
document.write( "s=l-8<BR>\n" );
document.write( "so ....<BR>\n" );
document.write( "5s-2l=14<BR>\n" );
document.write( "5(l-8)+2l=14<BR>\n" );
document.write( "5l-40+2l=14<BR>\n" );
document.write( "3l=54<BR>\n" );
document.write( "l=18<BR>\n" );
document.write( "s=10\r<BR>\n" );
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