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Right! Wow this is making so much more sense than I thought it would

8!

Wait. I got the two choices confused. I did choice D above, where n>= 0.
Choice D. is eliminated.

Okay, got it! Makes total sense. Thank you so SO much!

Is my answer right with this one? It's a similar problem. @mathstudent55

-.333?

Oh sorry .333

Yeah, I was hesitant on my answer. Glad I checked!

So it would be C., correct?

I don not.

Look at the first term and the second term: 4 and -8.
What is -8/4 = ?

Ooo, -2

So would it be B?

Right. The common ratio is -2, so you need an equation with a -2.
That means we need A. or B.

The sequence follows by -8, 16, -32, 64 . . .

B. is correct because it gives us the correct first term, 4.

Okay, just asking, but why wouldn't it be A.?

-2

Right, but we were told the first term is 4, so A. cannot be correct.

Ooo okay. Got it! Thank you so much!

I got 100%!! Thanks so much!