A thermos bottle that is chilled to 44 degrees Fahrenheit and then left in a 80-degree room will warm to a temperature of T(t) = 80 - 36e-0.1t degrees after t hours. Find the rate of change (in degrees per hour) of the temperature at the following. (Round your answers to one decimal place.) (a) at time t = 0 degrees per hour (b) after 5 hours degrees per hour

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