algebra 2
posted by soka .
The number of milligrams of a drug that remains in a patientâ€™s system after t hours is given by the function A(t) = Iert. Jordan was given 350 milligrams of medicine which leaves his bloodstream at a rate of 20%. How much of the medicine remains in his system after 4 hours?

rate of 20percent? Nonsense, rate has time in it.