Question

What is the 25th term of the arithmetic sequence -3,4,11,18,25

Answer 1

165

Explanation:

the 25th term is got from getting the first term -3 plus (24th term multiplied by the common difference which is 7)

Answer 2

165.

Explanation:

The nth term is an = a1 + (n - 1)d.

The common difference (d) is 7 and the first term (a1) is -3, so the 25th term

= a25 = -3 + (25-1)*7

= =3 + 24*7

= 165.