2.What are the next four terms in the following geometric sequence?

5, 15, 45,...

3.) List the first four terms of a geometric sequence with t1 = 4 and tn = -3tn-1

4. Find the sixth term of a geometric sequence with t5 = 24 and t8 = 3.

5. Find the three geometric means between 2 and 162

6. Find the three geometric means between

1/2 and 8.

7. Find S11 for 1 + 2 + 4 + 8 + ...

8. Find S15 for 1 + 1.5 + 2.25 + 3.375 +