The temperature T of a cup of coffee is a function T(t) where t is the time in minutes. The room temperature is Celsius. The rate at which the coffee cools down is proportional to the difference between the temperature of the coffee and the room temperature. Use this information to write a differential equation describing the derivative of the coffee temperature in terms of T and t. Use C as your proportionality constant. C should be a positive number. Write T instead of T(t).

Help! Thanks I'm just having a hard time deciphering what the questions wants me to write in terms of a formula, and I'm sure I can go from there.