HELP!!!!!

Problems 13 - 20, Use each test at least once to test the series for convergence or divergence. Specify the test that was applied. (A) nth term test (B) Geometric Series Test (C) Telescoping Series Test (D) p-Series Test (E) Integral Test (F) Direct Comparison Test (G) Limit Comparison Test 13. 15 ( - 1 ) 14. 2n M 6n - 3 n=0 n = 1 15. 1 16. 4 M: 3 2 + 1 n (n + 4 ) n=1 n= 1 17. 18. 1 1 2 n2 - 4 n = 2 1 1 20. n 19. iM n +1 n + 2 (n2+ 1) 3 n=1