Question

PLEASE HELP! I AM HAVING PROBLEM WITH THESE SET OF PROBLEMS!!! IF YOU GET THEM CORRECTLY YOU WILL EARN 15 POINTS!!!

1.) What is the common ratio for the geometric sequence 1/256, 1/32, 1/4, 2, ...?

6
2.) What is the sum of the series ∑ (-3K+20)
K=3

Answer 1

Answers:
a =  128
∑ = 11

Answer 2

Answers:

a = 128

∑ = 11