ECZ 2021 · O-Level Paper 1 — Relations and Functions
The functions f and g are defined by f(x) = x + 92 and g(x) = x − 2. Find fg(x).
- A. x + 52
- B. x + 72
- C. x + 7
- D. x + 112
Verified working — step 1
In fg(x), the function written nearest to x acts first: apply g, then feed the whole result into f.The full step-by-step working and final answer, plus the video lesson for this topic, 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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