1) Suppose a patient receives a drug intravenously. The amount (in micrograms) in the bloodstream after t hours is given by f(t)= 100(1-e^-(5t)). How fast is the drug going into the bloodstream initially?

2) The graph of y=f(t) in question 1 has a horizontal asymptote (corresponding to the amount in the bloodstream when the rate at which the drug is eliminated equals the rate at which it is coming in). What is the equation of this asymptote?