I need help with math!!! time is running out!!! will mark brainliest!!!

PLEASE TAKE A LOOK AT ALL PHOTOS, TO ANSWER ALL QUESTIONS.

I need help with math time is running out will mark brainliest PLEASE TAKE A LOOK AT ALL PHOTOS TO ANSWER ALL QUESTIONS class=
I need help with math time is running out will mark brainliest PLEASE TAKE A LOOK AT ALL PHOTOS TO ANSWER ALL QUESTIONS class=
I need help with math time is running out will mark brainliest PLEASE TAKE A LOOK AT ALL PHOTOS TO ANSWER ALL QUESTIONS class=
I need help with math time is running out will mark brainliest PLEASE TAKE A LOOK AT ALL PHOTOS TO ANSWER ALL QUESTIONS class=

Respuesta :

1.

Answer C.

2.

Answer A.

3.

Answer C.

4.

Answer D.
1) none are correct closest is option 3 should be -1(-5)^n-1
2) option 1
3) is option 3
4) is option 4