document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=863165>Question 863165</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1)Find all values of k that ensure that the given equation has exactly one solution.<BR>\n" );
document.write( "kx2 + 26x + k = 0<BR>\n" );
document.write( "k =  	(smaller value)<BR>\n" );
document.write( "k =  	(larger value)\r<BR>\n" );
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document.write( "2)What quantity of pure acid must be added to 300 mL of a 25% acid solution to produce a 70% acid solution?\r<BR>\n" );
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document.write( "3)Mary has $3.00 in nickels, dimes, and quarters. If she has twice as many dimes as quarters and negative six more nickels than dimes, how many coins of each type does she have?\r<BR>\n" );
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document.write( "4)A coffee merchant sells a customer 2 lb of Hawaiian Kona at $5.50 per pound. The merchant's scale is accurate to within ±0.09 lb. By how much could the customer have been overcharged or undercharged because of possible inaccuracy in the scale? (Round your answer to the nearest whole cent.)\r<BR>\n" );
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document.write( "5)It is estimated that the annual cost of driving a certain new car is given by the formula<BR>\n" );
document.write( "C = 0.38m + 2100<BR>\n" );
document.write( "where m represents the number of miles driven per year and C is the cost in dollars. Jane has purchased such a car and decides to budget between $6660 and $8180 for next year's driving costs. What is the corresponding range of miles that she can drive her new car?\r<BR>\n" );
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document.write( "6) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #520249 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=520249\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Too many questions in one posting, but there is a lesson  which will help with the mixture problem, and I give here most of the solution for your quadratic equation problem.\r<BR>\n" );
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document.write( "See this for the mixture problem:  <a  rel=nofollow HREF=\"http://www.algebra.com/tutors/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev\">Mixture percents: One part known, other part unknown</a>\r<BR>\n" );
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document.write( "The quadratic, k value question:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kx%5E2+%2B+26x+%2B+k+=+0 ALIGN=MIDDLE  ALT=\"kx%5E2+%2B+26x+%2B+k+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "The discriminant must be 0, if the equation has exactly 1 solution.<BR>\n" );
document.write( "Given <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=ax%5E2%2Bbx%2Bc ALIGN=MIDDLE  ALT=\"ax%5E2%2Bbx%2Bc\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the discriminant is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E2-4ac ALIGN=MIDDLE  ALT=\"b%5E2-4ac\"   DISABLED_style= \"max-width:90%; height:auto;\" >.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=26%5E2-4%2Ak%2Ak=0 ALIGN=MIDDLE  ALT=\"26%5E2-4%2Ak%2Ak=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4k%5E2=26%5E2 ALIGN=MIDDLE  ALT=\"4k%5E2=26%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%5E2=26%5E2%2F4 ALIGN=MIDDLE  ALT=\"k%5E2=26%5E2%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%5E2=%2826%2F2%29%5E2 ALIGN=MIDDLE  ALT=\"k%5E2=%2826%2F2%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%5E2=13%5E2 ALIGN=MIDDLE  ALT=\"k%5E2=13%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28k=-13%29 ALIGN=MIDDLE  ALT=\"highlight%28k=-13%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28k=13%29 ALIGN=MIDDLE  ALT=\"highlight%28k=13%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Number 4 Question:<BR>\n" );
document.write( "How many pounds bought, if no scale error?  2 pounds.<BR>\n" );
document.write( "If the scale undershoots, then reading was 2-0.09 pounds, 1.91 pounds.<BR>\n" );
document.write( "If scale overshoots, then reading was 2.09 pounds.<BR>\n" );
document.write( "The expectation is $11.00 dollars for 2 pounds of coffee.<BR>\n" );
document.write( "The undershot at 1.91 pounds SHOULD cost <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.91%2A5.50=10.51 ALIGN=MIDDLE  ALT=\"1.91%2A5.50=10.51\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars.  Payment is 45 cents too much.<BR>\n" );
document.write( "The overshot at 2.09 pounds SHOULD cost <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2.09%2A5.50=11.50 ALIGN=MIDDLE  ALT=\"2.09%2A5.50=11.50\"   DISABLED_style= \"max-width:90%; height:auto;\" > dollars.  Payment is 50 cents too little. </SPAN>\n" );
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