Question

Please help with this! I will mark you as brainliest!

Answer 1

Answer:

an = 5 + (n-1)7

= 5+7n-7

= 7n-2

Answer 2

Answer:

$a_{n}$ = 7n - 2

Step-by-step 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 = 5 and d = 12 - 5 = 7, thus

$a_{n}$ = 5 + 7(n - 1) = 5 + 7n - 7 = 7n - 2