Answer:
1890
Explanation:
The sum of the terms of this arithmetic sequence is the product of the number of terms and the average of the first and last term.
A1 = 4·1 + 1 = 6
A30 = 4·30 + 1 = 121
The average term in the sequence of 30 terms is (6 + 121)/2 = 63, so the sum of the sequence is ...
30·63 = 1890