After a drug is taken orally the amount of the drug in the bloodstream after t hours is f t 118 e 0 4t et units Complete the following a Graph f t f t and f t in the window 0 12 by 20 75 b How many units of the drug are in the bloodstream after 7 hours c At what rate is the level of drug in the bloodstream increasing after 1 hour d While the level is decreasing when is the level of drug in the bloodstream 10 units e What is the greatest level of drug in the bloodstream and when is this level reached f When is the level of drug in the bloodstream decreasing the fastest a Choose the correct graph below OA B b After 7 hours there are 7 units of the drug in the bloodstream Round to the nearest integer as needed c After 1 hour the level of drug in the bloodstream is increasing at a rate of Round to the nearest integer as needed units per hour c Q O D