A package of frozen strawberries has been taken from the freezer which is at -25 degrees Fahrenheit and placed on the counter in a room in which the temperature is 78 degrees. Thirty minutes later, the temperature has risen to 0 degrees. The rate at which an object changes temperature is directly proportional to the difference in the temperature of the object and the temperature of the surrounding medium.
a) Give a formula that gives the temperature of the berriees in terms of time.
b) When will the berries reach 32 degrees?