document.write( "Question 1086217: A nursery uses two brands of fertilizer for rose bushes.
\n" ); document.write( "Brand A costs $3 per pound and provides 280 units of nutrients per pound.
\n" ); document.write( "Brand B costs $4 per pound and provides 180 units of nutrients per pound.
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\n" ); document.write( "CONSTRAINTS: The nursery spends $100 or less for fertilizer and wants to provide at least 5200 units of nutrients.
\n" ); document.write( "Because brand B contains a special nutrient that brand A does not, the nursery uses at least 4 pounds of brand B.
\n" ); document.write( "How many pounds of each should the nursery use to minimize cost? \r
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Algebra.Com's Answer #700380 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
I'm using x in place of A and y in place of B,
\n" ); document.write( "\"3x%2B4y%3C=100\"
\n" ); document.write( "\"280x%2B180y%3E=5200\"
\n" ); document.write( "\"y%3E=4\"
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\n" ); document.write( "So then graphing the constraints shows the feasible region and the vertices of the region A,B, and C.
\n" ); document.write( "Check the cost and nutrition level for each vertex.
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\n" ); document.write( "So it looks like,
\n" ); document.write( "\"A=x=28\" and \"B=y=4\" provides the best nutrition level of 8560 and stays within the cost limit.
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