## Intermediate Algebra for College Students (7th Edition)

$-500$
Sum of first $n$th term of an arithmetic sequence can be calculated as: $S_n=\dfrac{n}{2}[a_1+a_n]$ since, we have {$4,2,0,...., -44$} This implies that $a_1=4,a_n=-44,n=25$ Now, $S_{25}=\dfrac{25}{2}[4+(-44)]=-500$