A cup of coffee: The temperature C of a fresh cup of coffee t minutes after it is poured is given by a. Make a graph of C versus t. b. The coffee is cool enough to drink when its temperature is 150...

A cup of coffee: The temperature C of a fresh cup of coffee t minutes after it is poured is given by

a. Make a graph of C versus t.

b. The coffee is cool enough to drink when its temperature is 150 degrees. When will the coffee be cool enough to drink?

c. What is the temperature of the coffee in the pot? (Note: We are assuming that the coffee pot is being kept hot and is the same temperature as the cup of coffee when it was poured.)

d. What is the temperature in the room where you are drinking the coffee? (Hint: If the coffee is left to cool a long time, it will reach room temperature.)