Question

next two numbers in this pattern?
3, -9,27,-81...
A.)135, -189
B.) 243, -729
C.) -243. 729
D.) -135, 189

Answer 1

-9*-3=27
27*-3=-81
-81*-3=??

Answer 2

there are only 2 types of progressions.
first determine which this is.
the arithmetic has a common difference the same between the terms
the geometric has a common ratio
what type is this?
what is d or r
given a = 3