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Not sure what you need. Could you tell me the subject and topic, and what would help (quick recap, practice problems, or a mock exam)? If you want a quick starter on functions, here are 5 practice problems: 1) Let f(x) = x^2 - 4x + 5. Compute f(3). 2) Determine the domain of f(x) = sqrt(9 - x^2). 3) If g(x) = 2x + 1 and f(x) = x^3, find (f ∘ g)(x). 4) Find the derivative f′(x) if f(x) = x^3 - 3x^2. 5) For f: R → R defined by f(x) = 1/x, determine f(−2). Reply with which problems you want solved, or paste your own question.