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2) After 10 days, 95% of a radioactive material has decayed a) What is the halflife of the material? [2 marks] b) How long will

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2) After 10 days, 95% of a radioactive material has decayed a) What is the halflife of the material? [2 marks] b) How long will it take for there to be 15% of the original material left?[2 marks] 3) Determine the equation for the sinusoidal function below. You may choose to state your answer as either a sine or cosine function. [4 marks]

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