If f(x) = 3x - 2 and g(x) = -x + 4, find (g o f)(x).

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Combine like terms to make a simpler expression 3z+z

The mass of a marine organism, in pounds, p years after it is born is given by the polynomial function r(p) = -4p2 + 300p. find the mass when p = 20 years.