# The sum of given arithmetic sequence: sum n=1 80 2n - 5=6080

The sum of given arithmetic sequence:
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Formula used:
The formula for the summation of a polynominal with degree 1 is, ...(1)
The formula for the summation of a constant is, ...(2)
Calculation:
To find the sum of the arithmetic sequence, i.e, to find,

Write as follows,

Substitute the values of n in equation (1).
We get,

$=6480$
Now to find the
Substitute the values of n in equation (2).
We get,

Then,

$=6080$
Hence
Jeffrey Jordon