Question

What is the 9th term of the geometric sequence 4, −20, 100, …?

Answer 1

1 = 4
2 = -20
3 = 100
4 = -500
5 = 2500
6 = - 12,500
7 = 62, 500
8 = - 312, 500
9 = 1,562,500

Hope this helped☺☺

Answer 2

4, -20, 100, -500, 2500, -12500, 62500, -312500, 1562500.
1,562,500 is your answer. 
I hope this helps!
(All the numbers were multiplied by -5 to get the answer.)