I need help on this question

A cup of green tea contains 49 mg of caffeine when you are using the tea leaves for the first time. A cup from the second brew contains 18 mg of caffeine, while a cup from the third brew contains only 5 mg of caffeine. Caffeine leaves the body at a continuous rate of about 17% per hour. Does the initial amount of caffeine in the body (whether from the first, second or third brew) change the differential equation? Yes, if the initial value changes that will change the differential equation. O No, the initial value makes no change in the differential equation