Eric Nicholas K's answer to Kathy's Secondary 4 A Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
The four questions are essentially a 'real world' problem relating to exponentials and logarithms.

Q1 is related to biology.
Q2 is related to physics.
Q3 is related to chemistry.
Q4 is related to money/business.