The rule is [tex]a_{n}[/tex] = 7 x [tex]13^{n-1}[/tex].
What is a sequence?
A sequence is an array of numbers in which successive terms differ by a constant term.
Analysis:
For n = 2
[tex]a_{2}[/tex] = 13[tex]a_{1}[/tex] but a1 = 7
a2 = 13 x 7
a3 = 13[tex]a_{2}[/tex]
a3 = 13 x 13 x 7
so the correct formula is [tex]a_{n}[/tex] = 7 x [tex]13^{n-1}[/tex] for n = 1
Learn more about sequence: brainly.com/question/6561461
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