The sum of the first n terms of an arithmetic progression is given by $S_n = 2n^2 + n$. What’s the progression’s 15th term?
A. 512
B. 537
C. 562
D. 587
Answer:C
The sum of the first n terms of an arithmetic progression is given by $S_n = 2n^2 + n$. What’s the progression’s 15th term?
A. 512 B. 537 C. 562 D. 587