A pie comes out of an oven at 320 °F and is placed to cool

Last updated: 7/7/2022

A pie comes out of an oven at 320 °F and is placed to cool in a 70 °F kitchen. The temperature of the pie T (in °F) after t minutes is given by T=70+250e -0.018t. The pie is cool enough to cut when the temperature reaches 110 °F. Determine the time this will take. Round to the nearest minute. The pie is cool enough to cut after approximately minutes.