Apork roast was taken out of a hardwood smoker when its internal temperature had reached 180°f and it was allowed to rest in a 75°f house for 20 minutes after which its internal temperature had dropped to 170°f. assuming that the temperature of the roast follows newton’s law of cooling,
a) express the temperature of the roast, t as a function of time t. b) find the amount of time that has passed when the roast would have dropped to 140°f had it not been carved and eaten.