Is the sequence geometric? If so, identify the common ratio. 2,-4,-16,-36, ...
a. yes; -2
b. yes; 2
c. yes; -3
d. no
+128599 It is not geometric......for it to be geometric, the ratio between successive terms must be equal
So .......
Ratio of second term to the first term = -4 / 2 = -2
But
Ratio of the third term to the second term = -16/-4 = 4
+116 D)
Beacuse in a Geometric series you MULTIPLY by the same number over and over again while a arithmetic sequence you add or subtract by the same number over and over again. in this case it is doing nither which makes the awnser D..
