Answer:
arithmetic series
Explanation:
We are adding 1 each time , so this is an arithmetic sequence
a1 =5
The common difference is 1 so d=1
an = a1+d(n-1)
an = 5 + 1(n-1)
an = 5+n-1
an = n+4
If we have an arithmetic sequence, we have an arithmetic series when we add the arithmetic sequence