# Vanessa has 180 feet of fencing that she intends to use to build a rectangular play area for her dog. She wants the play area to enclose at least 1800 square feet. What are the possible widths of the play area?

The possible widths of the play area are : 30 ft. or 60 ft.

and

From (1),

Solving this quadratic equation we have :

The possible widths of the play area are : 30 ft. or 60 ft.

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The possible widths of the play area are ( 0 < w \leq \frac{180}{2} ), which simplifies to ( 0 < w \leq 90 ) feet.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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