a) w = 220 - l
b) A = lw = l(220-l)
c) A square would give you the greatest area.
The sum of the length l and the width w of a rectangular area is 220 meters.
(a) Write w as a function of l.
w =
(b) Write the area A as a function of l.
A =
(c) Find the dimensions that produce the greatest area.
l =
w =
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