The amount of a certain medication, in milligrams, remaining in a patient's bloodstream can be modeled by the equation , where is the amount of medication remaining and is the number of hours since the medication was administered. What does the number represent in this equation?
The initial amount of medication in milligrams.
The total time the medication stays in the bloodstream.
The rate, in milligrams per hour, at which the medication is eliminated from the bloodstream.
The maximum amount of medication the patient can receive.
