[tex]\bf n^{th}\textit{ term of an arithmetic sequence}\\\\
a_n=a_1+(n-1)d\qquad
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\
d=\textit{common difference}
\end{cases}\\\\
-------------------------------\\\\
\begin{array}{llll}
term&value\\
------&------\\
1&a_1=28\\
2&a_2=28+(2-1)10\\
&a_2=28+10\\
&a_2=38\\\\
3&a_3=28+(3-1)10\\
4&a_4=28+(4-1)10\\
5&a_5=28+(5-1)10
\end{array}[/tex]
