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Algebra 24 Online
OpenStudy (anonymous):

The temperature of a chemical reaction ranges between 30 degrees Celsius and 70 degrees Celsius. The temperature is at its lowest point when t = 0, and the reaction completes 1 cycle during a 10-hour period. What is a cosine function that models this reaction? A. f(t)= 20 cos 10t+50 B. f(t)= 50 cos 10t+50 C. f(t)= -50 cos pi/5t + 20 D. f(t)= =20 cos pi/5t + 50

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