Find the length of JM

15

Step-by-step explanation:

It should be the same as GJ

Hello there!

Part A: The data is modeling a geometric sequence since the numbers are multiplying  and that can't be measured in an arithmetic sequence.

Part B:  Recursive Formula for Geometric Sequence

a1 = 4

a(n) = a(n-1) x 2

Plug 5 in:

a (5) = a (5-1) x 16

a (5) = 64

Part C:

a9 = a1 (r)^n-1

a9 = 4 (2)^5

a9 = 4 x 32

a9 = 128