Simon has
160
160160 meters of fencing to build a rectangular garden.
The garden's area (in square meters) as a function of the garden's width
w
ww (in meters) is modeled by
A
(
w
)
=
−
w
(
w
−
80
)
A(w)=−w(w−80)A, left parenthesis, w, right parenthesis, equals, minus, w, left parenthesis, w, minus, 80, right parenthesis

what width will produce the maximum garden area