Waec 2025 Mathematics Question 3

Practice essay / theory question 3 from the 2025 Waec Mathematics examination. This question covers General .

Waec 2025 Mathematics Essay / Theory
Topic: General
Question 3 WAEC • 2025 • MATHEMATICS • essay

A company installs solar panels in its premises to reduce its electricity cost. The monthly savings on electricity in \( \$ \), is modelled by \( S=200+50 x-2 x^{2} \), where \( x \) is the number of months after installation.

Question Parts

( a )
At what time will the savings on electricity stop increasing?
( b )
Find the maximum savings.

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About This Question

This is Waec 2025 Mathematics Question 3. It is one of the essay questions from the 2025 Waec Mathematics examination.

The question covers General .

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