Question

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

Answer 1

\[165 <x(x+4) < 725\]

Answer 2

If width = W,then area = W(W+4),by the problem,

\[ 165 <x(x+4) < 725 \Rightarrow -29<x<-15\|11<x<25 \]

Answer 3

ok so what was the W. I dont get this answer

Answer 4

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.