Question

what are the first five terms in the arithmetic sequence An=8n, stating with n=1

Answer 1

\(\large\color{black}{ A_n=8\times n }\)
\(\large\color{black}{ a_1=8\times 1=8 }\)
\(\large\color{black}{ a_2=8\times 2=16 }\)
\(\large\color{black}{ a_3=8\times 3=24 }\)

So you can already tell it is going like, \(\large\color{black}{ 8,~16,~24~... }\)

Answer 2

Can you see the pattern?
Can you write the first 5 terms.