Question
WJEC Unit 1 (Non-calculator) — Higher
f(x) = 4x − 7.
(a) Evaluate f(3). (1 mark) (b) Find an expression for f⁻¹(x). (2 marks) (c) Solve f(x) = f⁻¹(x). (3 marks)
6 marks · take your time before peeking.
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Generated by TopMyGrade AI · cross-check official sources before relying on the mark-scheme phrasing.