Question

Find a formula for the nth term of the arithmetic sequence second term -12 common difference is 5

Answer 1

Explanation:

Second term = -12; d = 5

First term = -12 - 5 = -17

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

= -17 + (n-1)*5

= -17 + 5n - 5

= -22 + 5n