Relax

Respuesta :

Stephen46

Answer:

For an nth term U(n) = a + ( n - 1)d

n = number of terms

a = first term

d = common difference

a = -9

d = -3--9 = -3+9 = 6

U(n) = -9 + (n - 1)6

That's option A.

Hope this helps.

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