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Substituting into a function

GCSE · Mathematics · OCR · A7Interpret expressions as functions; inverse and composite functions

Question

OCR J560/04 — Higher (non-calculator)

f(x) = 3x − 5.

(a) Find f(4). [1] (b) Find f(−2). [1] (c) Solve f(x) = 16. [2]

4 marks · take your time before peeking.

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