Question 750517
In arithmetic sequence,
{{{a[n] = a[1] + (n - 1)d}}} where {{{a[n]}}} = nth term, d = common difference
The first term of the sequence -15,-8,-1,6,13,... is -15 and the common difference is 7.
{{{a[n] }}} = {{{-15 + (n - 1)(7)}}}
{{{a[n] }}} = {{{7n - 22}}}
The 100th term is
{{{a[100] = 7(100) - 22}}} = {{{highlight(678)}}}