() Consider the concentration C (in mg/litre) of a drug in the blood as a function...

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() Consider the concentration C (in mg/litre) of a drug in the blood as a function of the amount of drug injected, z, in mg, and the time since injection, t, in hours. For 0 < <4 mg and t 0 hours, we have C= f(x,t) = 26xte-4. == Calculate the following: f(3,4)= Give a practical interpretation of your answer. Choose the best option. f(3,4) is: A. the amount of a 4 mg dose in the blood 3 hours before injection. B. the change in concentration of a 4 mg dose in the blood 3 hours after injection. C. the concentration in the blood 4 hours after injection of a 3 mg dose. D. the half-life of a 3 mg dose in the blood 4 hours after injection. E. the concentration in the blood 3 hours after injection of a 4 mg dose. F. the change in concentration of a 3 mg dose in the blood 4 hours after injection. () Consider the concentration C (in mg/litre) of a drug in the blood as a function of the amount of drug injected, z, in mg, and the time since injection, t, in hours. For 0 < <4 mg and t 0 hours, we have C= f(x,t) = 26xte-4. == Calculate the following: f(3,4)= Give a practical interpretation of your answer. Choose the best option. f(3,4) is: A. the amount of a 4 mg dose in the blood 3 hours before injection. B. the change in concentration of a 4 mg dose in the blood 3 hours after injection. C. the concentration in the blood 4 hours after injection of a 3 mg dose. D. the half-life of a 3 mg dose in the blood 4 hours after injection. E. the concentration in the blood 3 hours after injection of a 4 mg dose. F. the change in concentration of a 3 mg dose in the blood 4 hours after injection.