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Step-by-step explanation:

why would people join a zoom with some random person?

A(w) = - + 100w

Step-by-step explanation:

First,  we need to find down the length (l) of the rectangular area in term of w

We have 200 feet of fencing is the perimeter of the rectangular area, which mean:

2 (w + l) = 200

<=> l = 100-w

But the area of land: w*l

= w (100-w)

=- + 100w

So, A(w) = - + 100w