Question

find an equation for the nth term of the arithmetic sequence. -15, -6, 3, 12, ...

Answer 1

Answer:

Step-by-step explanation:

let the first term be a, a = -15

Difference, d = -6 - (-15)

= -6 + 15 = 9

An = a + (n-1) d

= -6 + (N - 1 ) 9

= -6 + 9n - 9

= 9n - 15

Hope it works

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