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Mathematics 9 Online
OpenStudy (anonymous):

The depth of water, d(t) metres, in a seaport can be approximated by the sine function d(t) = 2.5sin0.164pi(t-1.5)+13.4, where t is the time in hours. How do I graph the function for 0 < t < 24 and find the period to the nearest tenth of an hour?

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