Question

What is the explicit formula for the geometric sequence: 224, 112, 56, 28, ... .

Answer 1

a_n=224(1/2)^n-1

Explanation:

In this geometric sequence, we can see that the common ratio is 1/2 and the 1st term is 224. using this information, we can plug it into the geometric series formula and we get a_n=224(1/2)^n-1.