Question

An = 5 - 7n. What is the value of a12?

Answer 1

Answer:

The value of $a_{12}=-79$

Step-by-step explanation:

Being the general expression of the sequence:

$a_n=5-7n$

We replace the value n=12 to get

$a_{12}=5-7\times 12=5-84=-79$