Exponential Functions 1 A baker records the internal temperature of a pie that has been left to cool on a counter The room temperature is 14 C An equation that models this situation is T t 68 0 5 1 14 where T is the temperature in degrees Celsius and is the time in minutes a Sketch the graph of the function 9 14 H A y 14 y in 82 b Determine the i Domain TEIR ii Range yeir y 14 c Determine the temperature to the nearest degree of the pie after 15 minutes 15 r 68 0 5 110 k T 38004 682 14 d How much time did it take for the pie to reach an internal temperature of 31 C