A rumor spreads through a group of teenagers
according to the exponential model
N = 2 (1...
![subject](/tpl/images/cats/mat.png)
Mathematics, 29.05.2020 00:06 hmu323
A rumor spreads through a group of teenagers
according to the exponential model
N = 2 (1.81).7t
where N is the number of teenagers who have heard
the rumor t hours after it is first started.
(a) Find the number of teenagers who started the
rumor.
(b) Write down the number of teenagers who have
heard the rumor five hours after it is first started.
(C) Determine the length of time it would take for 150
teenagers to have heard the rumor. Give your answer
correct to the nearest minute.
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Answers: 3
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