'25. (Review) Evaluate the following improper integral: If: 1 +12, lit a]: u|=l a. b. c. 11' d. The improper integral diverges '26. (Review) Evaluate the following improper integral: If: Ira2dr 3.0 11. 2e 2 the d. The improper integral diverges 27. The series 2 G)" converges with n20 2) 3: e)" =1 \"=0 b) E: e)" = 2 11:0 d} None of the above 28. A drug is administered into the body. At the end of each hour, the amount of drug present is half what it was at the end of the previous hour. What fraction of the original amount of the drug is present at the end of in hours? a. G)" b. % c. 1- Q)\" d. 1-% e. None of the above 29.Detenninethesumoftheseries2+%+-+%+... 1 a. 7 11% a; 13 d. F e. None of the above m I! 30. Find the value of I for which the series 2 \"3'1 converges. (Hint: When does a geometric series converge?) n=u 1 1 a.