The diameter of a red blood cell is \(8.2\times10^{-6}\text{ m}\). Express this value as a decimal, in millimetres.[1]
In 2024, Changi Airport handled 67.7 million passengers. Calculate the mean number of passengers handled by the airport each month. Leave your answer in standard form, correct to 2 significant figures.[2]
LBB Bank currently charges 3% per year compound interest on all loans, compounded once every three months. The bank manager proposes to adjust the frequency of interest compounded to once every month instead, so as to increase the earnings of the bank. Do you agree with the bank manager’s proposal? Explain your answer with clear workings.[3]
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Answer:(a) \(0.0082\text{ mm}\) (b) \(5.6\times10^6\) (c) Agree; monthly compounding gives a larger total