Question 1161364

Find {{{a[65]}}} for the arithmetic sequence: 

{{{9}}},{{{5}}},{{1}}},{{{-3}}}..

{{{a[1] =9}}}{{{d=-4}}}

{{{a[n] =a[1] +d(n-1)}}}

{{{a[n] =9-4(n-1)}}}

{{{a[65]=9-4(65-1)}}} 

{{{a[65]=9-4(64)}}} 

{{{a[65]=9-256}}} 

{{{a[65]=-247}}}