Asked by Alto saxaphone
Which exponential function can be used to show the geometric sequence 40, 160, 640, . . . ?(1 point)
an=40+4(n−1)
an=4(40)n−1
an=40(120)n−1
an=40(4)n−1
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Answered by
GPT-5 mini
AI
an = 40(4)^(n−1)
Reason: each term is multiplied by 4 (160/40 = 4), so a_n = a1·r^(n−1) = 40·4^(n−1).
Reason: each term is multiplied by 4 (160/40 = 4), so a_n = a1·r^(n−1) = 40·4^(n−1).
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