1 point In a city, a rumour is spreading about the safety of corona vaccination. Suppose N number of people live in the city and f(t) is the number of people who have not yet heard about the rumour after t days. Suppose f(t) is given by f(t)=Ne^−kt, where k is a constant. If the population of the city is 1000, and suppose 40 have heard the rumor after the first day. After how many days (approximately) half of the population would have heard the rumor?
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it is a story problem or a chapter
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