Express, in terms of pi, the area whose radius is 6.

Is the power produced directly proportional to the wind speed, give reasons for your answer?

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If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0