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Suppose that f (x) = 2x for all x. a) Find f(3) if f(0) = 0. b) Find f(3) if f(1) = - 2. c) Find f(3) if f( - 5) = 26. a) When f(0) = 0, f(3) = (Simplify your answer.) b) When f(1) = - 2, f(3) = ( Simplify your answer.) c) When f( - 5) = 26, f(3) = (Simplify your answer.)