Ricardo throws a stone off a bridge into a river below. The stone's height (in meters above the water), xxx seconds after Ricardo threw it, is modeled by

w(x)=-5(x-8)(x+4)w(x)=−5(x−8)(x+4 )w, left parenthesis, x, right parenthesis, equals, minus, 5, left parenthesis, x, minus, 8, right parenthesis, left parenthesis, x, plus, 4, right parenthesis

What is the maximum height that the stone will reach?

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