Question 9 (1 point) ~/ Saved Adrug is administered every 6 hours in dose of 6 mg. The drug is neutralized at an exponential rate with decay rate constant k = 0.4. Not all the drug is neutralized before the next dose is administered. Let 0 Ait): denote the amount of drug in the patient's system at time 1'. hours, o 8\": denote the amount of drug in the patient at the beginning of the n+1 dosage interval. and - Rn: denote the residual amount of the drug left in the patent at the end of the nth dosage interval. Note: 111e general form of the Exponential decay illodel is A(t) = Aged\" where: - A0: denote the initial amount presented at time t = 0. o k: denote the decay rate (unit: 1/time) 0 Alt): denote the amount left at time t The formula for the function A(t) over the second dose periods is: Oa) AU) = eDA: Ob) A\") = 6e-l.2e-0.4(r6) Oci AO') = (6 + 682.4)e-0.4(f6) U! d) A(t) = (6 + 68].6)e0.4(I~6) ' e) .40) = (6 + 6:71 )e'\"\"""\" (E: f) None of the above