Answer:
-50
Step-by-step explanation:
The numbers are separated by three
Answer:
[tex]a_{n}[/tex] = 3n - 87
Step-by-step explanation:
There is a common difference between consecutive terms , that is
- 81 - (- 84) = - 78 - (- 81) = - 75 - (- 78) = - 72 - (- 75) = 3
This indicates the sequence is arithmetic with nth term
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = - 84 and d = 3 , then
[tex]a_{n}[/tex] = - 84 + 3(n - 1) = - 84 + 3n - 3 = 3n - 87
