Answer:
= 4 
Step-by-step explanation:
There is a common ratio r between consecutive terms , that is
r = - 20 ÷ 4 = 100 ÷ - 20 = - 5
This indicates the sequence is geometric with nth term ( explicit formula )
= a₁ 
where a₁ is the first term and r the common ratio
Here a₁ = 4 and r = - 5 , then
= 4 
30in I know that because I just did this .this is EASY!
The graph is proportional
IV : 17 > 2 or 6 < 9......these are true....17 is greater then 2 and 6 is less then 9