Question

Someone help with this
Given a1 = 25 and d = -2, what is the 8th term?

Answer 1

a₈ = 11

Explanation:

The n th term of an arithmetic sequence is

`a_(n)` = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 25 and d = - 2, then

a₈ = 25 + (7 × - 2)

= 25 - 14

= 11