2.

Question

Identify the sequence as arithmetic, geometric, or neither.

1.6, 0.8, 0.4, 0.2, . . . (1 point)

arithmetic
geometric
neither

3.
5 • 3^n (1 point)

15, 30, 45, 60
5, 15, 45, 135
0, 15, 45, 135
15, 45, 135, 405

4.
Use the function rule ƒ(x) = n • |–1|^n. Find the output ƒ(2). (1 point)

4
3
–2
2

My answers:
2. geometric
3. 5, 15, 45, 135
4. 4

Answer 1

ok, this is shoking but.....

#2 correct
#3 ITS D.
#4 ITS D.

i go to the same online school and these were the answers.....
i got 3 and 4 wrong but-_- i digress

Answer 2

5,-15,45,-135 is it arithmetic , geometric or neither ?