Question

For problems 1 – 4, solve. You must show your work to receive credit.

1.What is the sum of the geometric sequence 8, –16, 32 … if there are 15 terms? (1 point)

2.What is the sum of the geometric sequence 4, 12, 36 … if there are 9 terms? (1 point)

3.What is the sum of a 6-term geometric sequence if the first term is 11, the last term is –11,264 and the common ratio is –4? (1 point)

4.What is the sum of an 8-term geometric sequence if the first term is 10 and the last term is 781,250? (1 point)
PLEASE HELP!!