The function D(h) = 7e^-0.25h can be used to find the number of milligrams D of a certain drug that is in a patient's bloodstream h hours after the drug has been administered. How many milligrams will be present after 1 hour? After 4 hours?
After 1 hour, there will be milligrams.
(Round to two decimal places as needed.)
After 4 hours, there will be milligrams.
(Round to two decimal places as needed.)