exam Maths Puzzle Numerical Ability

Hi I hope this is for the correct topic I have a word problem.I have seperated the equation w=3.14n+87.1 I think that is the waste generated? However I am really confused word prob

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exam Other Question
Which expression is equivalent to : logsqrtB (A) /C^4 ??
Is it
a)1/2logB+logA-4logC
b)1/2logB+4logA/C
c)1/2log(B+A)/4logC or
d)1/2logB+logA/4logC can you please rewrite the equation in standard form.

4y=24+2x