To find the first 4 terms of the sequence , you need to substitute 1, 2, 3,and 4 for n in the expression 2n-1
That is
[tex]\begin{gathered} Forf\text{irst term, n=1} \\ 2n-1=2(1)-1=2-1=1 \\ 2nd\text{ term, n=2} \\ 2n-1=2(2)-1=4-1=3 \\ 3rd\text{ term, n=3} \\ 2n-1=2(3)-1=6-1=5 \\ 4th\text{ term, n=4} \\ 2n-1=2(4)-1=8-1=7 \end{gathered}[/tex]So, the first 4 terms are 1, 3, 5 and 7.
