Question

Find the 82nd term of the arithmetic sequence –8, 9, 26, ...

Answer 1

Answer: 1,369

Explanation:

-8+(82-1)×17

-8+(81)×17

-8+1,377

=1,369

Answer 2

Explanation:

a= -8 ; d = 9 - (-8) = 9 + 8 = 17

nth term = a + (n-1)*d

82th term = (-8) + (82-1) * 17

= (-8) + 81* 17

= (-8) + 1377

= 1369