answer the following

The drug Valium is eliminated from the bloodstream exponentially with a half-life of 36 hours. Suppose that a patient receives an initial dose of 10 milligrams of Valium at midnight. a. How much Valium is in the patient's blood at noon on the rst day? b. Estimate when the Valium concentration will reach 15% of its initial level. a. How much Valium is in the patient's blood at noon on the rst day? There is approximately D mg of Valium in the patient's blood at noon on the first day. (Round to the nearest tenth as needed.) b. Estimate when the Valium concentration will reach 15% of its initial level. After approximately D hours the Valium concentration will reach 15% of its initial level. (Round to the nearest hour.)