Question 1081596
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Answer: Not geometric


We can determine this by dividing each term by its previous term.
r = term2/term1 = -4/2 = -2
r = term3/term2 = -16/(-4) = 4
r = term4/term3 = -36/(-16) = 2.25
Technically we only need to do two calculations, but it doesn't hurt to show all three.
The results don't match up, so we don't have a geometric sequence.
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