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a rectangular pen for a pet is 4 feet longer than it is wide. give possible values for the width W of the pen if its area must be between 165 and 725 square feet, inclusively
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\[165 <x(x+4) < 725\]
If width = W,then area = W(W+4),by the problem, \[ 165 <x(x+4) < 725 \Rightarrow -29<x<-15\|11<x<25 \]
ok so what was the W. I dont get this answer
If width = W,then area = W(W+4),by the problem, then, \[ 165 <x(x+4) < 725 \Rightarrow -29<x<-15\|11<x<25 \] here x=W.
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