Given the geometric sequence where a1 = −1 and the common ratio is 7, what is the domain for n? A. All integers B. All integers where n ≥ −1 C. All integers where n ≥ 0 D. All integers where n ≥ 1

D

Step-by-step explanation:

Hello, This is a geometric sequence where the first term is .

It means that the sequence is .

In other words, as the common ratio is 7 the sequence is defined by

For instance, we can estimate the first terms:

And we know that we can even find a formula for the term of the sequence by:

Now, to answer the question, the domain for n is all integers where .

Hope this helps.

Do not hesitate if you need further explanation.

Thank you