Question

Find the first five terms and the term named in the problem. a 11/1+ 8/2 nFind a 23

Answer 1

To find the term a23 you have to replace 23 where it says 'n':

$a_n=\frac{11}{8}+\frac{1}{2}n$$a_{23}=\frac{11}{8}+(\frac{1}{2}\times23)=\frac{11}{8}+\frac{23}{2}=\frac{11+92}{8}=\frac{103}{8}=12.875$

The answer is:

$a_{23}=\frac{103}{8}=12.875$