Posted by Casey on Sunday, March 13, 2011 at 12:31am.
Let x=length, y=width.
"A farmer has 165 feet of fencing material in which to enclose a rectangle area." means
2(x+y)≤165 ....(1)
"He wants the length x to be greater than 50 feet" means
x>50 ......(2)
"and width y to be no more than 20 feet." means
y&le=20....(3)
The system is the collection of inequalities (1) to (3).
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