Solve number 1 on the attached pdf

I am trying to find An, A16 and the part with the symbol, like a E with 16 on top, n=1 on the bottom and An in front plus is it convergent or divergent. The series of numbers are 10, 9.2, 8.464,

Thanks

Algebra 2 Honors Divergent and Convergent Series Name ________________________ Date ____________ Period _______ Answer the questions that follow each sequence. Use appropriate formulas. 10,9.2,8.464... 1. 4, 3, 10,... 2. an = ______________________ an = ______________________ a16 = ______________________ a16 = ______________________ 16 16 an = ____________________ a Convergent or Divergent? Convergent or Divergent? n =1 an = ____________________ n =1 4, 1, 6, 11... 3. n =1 n = ____________________ a = ____________________ 4. 1 1 1 , , ,1 64 16 4 n =1 n an = ______________________ an = ______________________ a16 = ______________________ a16 = ______________________ 16 a n =1 n = ____________________ Convergent or Divergent? an = ____________________ n =1 16 a n =1 n = ____________________ Convergent or Divergent? a n =1 n = ____________________ 5. 13 8 ( n 1) 6. n =1 7. 2 + 100n n =1 9. 100 1( n 1) 1 13 + n 2 n =1 n1 n=1 1 8. 1000 2 n =1 10. n =1 11. 3 5 i (3) 1 32 i ( 2) n=1 12. n 1 1 n =1 3 n 1 n1 13. Write a rule for the nth term of the arithmetic sequence with a7 = 10 and a13 = 48 . 14. Write a rule for the nth term of the arithmetic sequence with d = 6 and a12 = 4 . 15. Find n for the arithmetic series 2 + 9 + 16 + 23 + 30 + ... with Sn = 1661. 16. Find the first term in a geometric sequence for which r = 6 and a3 = 72 . 17. Consider the geometric sequence 1 + 9 + 81 + 729 + ... . Find n such that Sn = 7381. 18. Write a rule for the nth term of the geometric sequence if a2 = 75 and a4 = 3