Question

Please help and with steps. I suck at these and really don’t understand them

Answer 1

see explanation

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 = 10 and d = - 3, hence

`a_(n)` = 10 - 3(n - 1) = 10 - 3n + 3 = - 3n + 13, so

`a_(n)` = - 3n + 13 ← n th term formula