Question

Write down in terms of n, an expression for the nth term

Answer 1

Answer:

$a_{n}$ = - 7n - 1

Step-by-step explanation:

There is a common difference between consecutive terms , that is

- 15 - (- 8) = - 22 - (- 15) = - 29 - (- 22) = - 36 - (- 29) = - 7

This indicates the sequence is arithmetic with nth term

$a_{n}$ = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 8 and d = - 7 , then

$a_{n}$ = - 8 - 7(n - 1) = - 8 - 7n + 7 = - 7n - 1