ECZ 2018 · GCE Paper 1 — Relations and Functions
Given that f(x) = 8x and g(x) = 3x − 24, find an expression for fg(x).
- A. 6x − 4
- B. 24x − 24
- C. 6x − 2
- D. 3x − 232
Verified working — step 1
fg(x) means apply g first, then f: fg(x) = f(g(x)) = 8 × 3x − 24= 2(3x − 2) = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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