Use summation notation to write the series 2.2+8.8+15.4+.... term in each of these images, the lower limit of the summation notation is either n=1, or n=0
The series can be written as:
$\displaystyle\sum_{n=1}^{\infty} (5.6n-3.4)$
or
$\displaystyle\sum_{n=0}^{\infty} (5.6n+2.2)$