Question

A n =−1+3(n−1) an=−1+3(n−1) what is the 55 term in the sequence

Answer 1

ANSWER

$a_{55}=161$


EXPLANATION

The general term for the sequence is


$a_n=-1+3(n-1)$


To find the 55th term, we have to substitute
$n = 55$
in to the general term and simplify.



This implies that,

$a_{55}=-1+3(55-1)$



$a_{55}=-1+3(54)$




$a_{55}=-1+162$



$a_{55}=161$


Therefore the 55th term is 161.