Answer:
= - 2
Explanation:
There is a common ratio r between consecutive terms, that is
r = 6 ÷ - 2 = - 18 ÷ 6 = 54 ÷ - 18 = - 3
This indicates the sequence is geometric with explicit formula
= a₁
where a₁ is the first term and r the common ratio
Here a₁ = - 2 and r = - 3 , then
= - 2