Solve the Problem $3200 \mathrm { yd } 2$ If $240 \mathrm { yd }$

Solve the problem.
-A rectangular enclosure must have an area of at least $3200 \mathrm { yd } 2$ . If $240 \mathrm { yd }$ of fencing is to be used, and the width cannot exceed the length, within what limits must the width of the enclosure lie?

A) $0 \leq w \leq 40$
B) $40 \leq w \leq 80$
C) $60 \leq w \leq 80$
D) $40 \leq w \leq 60$

Correct Answer:

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