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Mathematics 15 Online
OpenStudy (anonymous):

You place a cup of 210 degrees F coffee on a table in a room that is 68 degrees F, and 10 minutes later, it is 200 degrees F. Approximately how long will it be before the coffee is 180 degrees F? Use Newton's law of cooling: T(t)=T[a]+(T[o]-T[a])e^-kt A. 45 minutes B. 15 minutes C. 1 hour D. 35 minutes

OpenStudy (anonymous):

D?

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