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A news item is spread by word of mouth to a potential audience of 10,000 people. After t days, the number of people will have

A news item is spread by word of mouth to a potential audience of 10,000 people. After t days, the number of people will have heard the news is given by:()=(10,000)/(1+50^0.4).

Find the rate at which the news is spreading after 14 days.

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