document.write( "Question 926521: Mr. Hanson wants to enclose a rectangular portion of his yard for his dog Gigi. He has 200 feet of fencing. He wants to maximize the amount of area.
\n" ); document.write( "Sketch and label the sides of the rectangle with variables.
\n" ); document.write( "Write and maximize a quadratic function for the AREA of his barking lot.
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Algebra.Com's Answer #562296 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+s+\" = the length of a side
\n" ); document.write( "The length of the other side is \"+%28+200+-+2s+%29+%2F+2++=+100+-+s+\"
\n" ); document.write( "The area is:
\n" ); document.write( "\"+A+=+s%2A%28+100+-+s+%29+\"
\n" ); document.write( "\"+A+=+-s%5E2+%2B+100s+\"
\n" ); document.write( "The maximum is at:
\n" ); document.write( "\"+s%5Bmax%5D+=+-b%2F%282a%29+\"
\n" ); document.write( "\"+a+=+-1+\"
\n" ); document.write( "\"+b+=+100+\"
\n" ); document.write( "\"+-b%2F%282a%29+=+-100+%2F+%28+-2%29+\"
\n" ); document.write( "\"+-b%2F%282a%29+=+50+\"
\n" ); document.write( "\"+s%5Bmax%5D+=+50+\"
\n" ); document.write( "-----------------
\n" ); document.write( "\"+4%2A50+=+200+\", so the yard must be a perfect square.
\n" ); document.write( "The maximum area is:
\n" ); document.write( "\"+A%5Bmax%5D+=+50%5E2+\"
\n" ); document.write( "\"+A%5Bmax%5D+=+2500+\"
\n" ); document.write( "-------------------
\n" ); document.write( "You can check this by making \"+s+=+49+\", find \"+A+\"
\n" ); document.write( "then make \"+s+=+51+\" find \"+A+\" ( very good check )\r
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