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Mathematics 18 Online
OpenStudy (anonymous):

Can someone please explain Sociologists have found that information spreads among a population at an exponential rate. Suppose that the function y=525(1-e^(-0.038t) ) models the number of people in a town of 525 people who have heard news within t hours of its distribution. How many people will have heard about the opening of a new grocery store within 24 hours of the announcement? [2 marks] When will 90% of the people have heard about the grocery store opening?

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