Question

Select the correct answer.

Identify the correct form of the following geometric sequence.

10 , 30 , 90 , 270 , ...

A.
f(x) = 3x + 10
B.
f(x) = 10(3x - 1)
C.
f(x) = 3x + 10
D.
f(x) = 3(10x)

Answer 1

the answer is D because every number after 30 is getting multiplied by 3

Answer 2

B

Explanation:

The recursive formula for a geometric sequence is an=an−1×r, and for this specific sequence b is the right answer. Hope this helps