A roast turkey is taken from an oven when its temperature has reached185Fand is placed on a table in a room where the temperature is75F.The graph shows how the temperature of the turkey decreases and gradually approaches room temperature.

There are multiple items on a coordinate plot where the horizontal axis istin minutes and the vertical axis isTin degree F. The first item is a curve that starts at(0, 185),passes down and to the right through point(60, 132)labeledP, and flattens out to slightly more than 75 as the time increases. There is a horizontal line atT= 75. The pointPhas a tangent line passing through it. The tangent line passes through the approximate points(30, 147)and(90, 105).

By measuring the slope of the tangent, estimate the rate of change of the temperature after an hour (inF/min).(Round your answer to one decimal place.)

F/min