Express the Sum Using Summation Notation $$a _ { n } = 0.11 n ^ { 2 } - 1.06 n + 7.29$$

Express the sum using summation notation. Use a lower limit of summation not necessarily 1 and k for the index of summation.
-The finite sequence whose general term is
$$a _ { n } = 0.11 n ^ { 2 } - 1.06 n + 7.29$$
where $n = 1,2,3 , \ldots , 9$ models the total operating costs, in millions of dollars, for a company from 1991 through $1999 .$
Find $\sum _ { \mathrm { i } = 1 } ^ { 5 } \mathrm { a } _ { \mathrm { i } }$

A) $\$ 26.6$ million
B) \$31.7 million
C) \$21.86 million
D) $\$ 25.36$ million