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If: is in hours, the drug concentration curve for a drug is given by C = 17.3fm" ng/ml. The minimum effective concentration is 9 ng/ml. {a} If the second dose of the drug is to be administered when the rst dose becomes ineffective, when should the second dose be given? Round your answer to the nearest hour. The second dose should be given when I z I hours. {b} Ifyou want the onset of effectiveness of the second dose to coincide with termination of effectiveness of theflrst dose, when should the second dose be given? Round your answer to the nearest hour. The second dose should be given when i m n hours. If: is in minutes since the drug was administered, the concentration. C (I) in ng/ml, of a drug in a patient's bloodstream is given by C (r) = 20re''04'. {a} How long does it take for the drug to reach peak concentration? What is the peak concentration? Round your answers to one decimal place. The drug reaches its peak concentration at n minutes. The peak concentration is n ng/ml. {b} What is the concentration of the drug in the body after 15 minutes? After an hour? Round your answers to one decimal place. The concentration after 15 minutes is n ng/ml. The concentration after 60 minutes is n ng/ml. {c} If the minimum effective concentration is 10 ng/ml, when should the next dose be administered? Enter your answer to the nearest 10 minutes. The next dose should be administered in n minutes. For time t 2 O, the function C = are5' with positive constants a and bgives the concentration, C, of a drug in the body. The gure below shows the maximum concentration reached (in nanograms per milliliter, ng/ml) after a 10 mg dose of the cough medicine hydrocodone bitartrate. Find the values of a and b. C (ngfml) 24.6- | 12 t (hours) Round your answer for a to two decimal places. and your answer for b to three decimal places. a=n en