Please answer all questions and show work:

17) What does the alternating series O Nothing, this is not an alternating series and therefore the (-n)"+1 alternating series test does not apply. test say about - ? The series diverges because the an n2+1 are not all positive. The series diverges because lim an O is not 0. O The series converges. 18) 1 Evaluate 0 1- n=1 n+1 01-7+1 O O k + 1 19) When determining the convergence of 5n2 + 2n -1 O 1 1 3(n2 + 2)2 O by the limit comparison test, which IM: IM : IM : IM8 of the following is the best p-series O to use? O