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OpenStudy (anonymous):
Find an equation for the nth term of the arithmetic sequence. -15, -6, 3, 12, ... an = -15 + 9(n + 1) an = -15 x 9(n - 1) an = -15 + 9(n + 2) an = -15 + 9(n - 1)
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OpenStudy (raden):
an = a1 + (n-1)d given a1 = -15 and d = 12-3 = 9
OpenStudy (anonymous):
an = -15 + 9(n - 1) ???
OpenStudy (raden):
obviously, you are right :)
OpenStudy (anonymous):
thanks :)
OpenStudy (raden):
welcome :)
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