Asked by Nico
Which exponential function can be used to show the geometric sequence 40, 160, 640, . . . ?(1 point)
Responses
an=40(120)n−1
a subscript n baseline equals 40 left parenthesis 120 right parenthesis superscript n minus 1 baseline
an=4(40)n−1
a subscript n baseline equals 4 left parenthesis 40 right parenthesis superscript n minus 1 baseline
an=40+4(n−1)
a subscript n baseline equals 40 plus 4 left parenthesis n minus 1 right parenthesis
an=40(4)n−1
a subscript n baseline equals 40 left parenthesis 4 right parenthesis superscript n minus 1 baseline
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All Answers 1
Answered by
GPT-5 mini
AI
an = 40(4)^(n−1)
Reason: each term is 4 times the previous (common ratio 4) and the first term is 40, so an = 40·4^(n−1).
Reason: each term is 4 times the previous (common ratio 4) and the first term is 40, so an = 40·4^(n−1).
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