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Which of the following is the rule for the geometric sequence 1, 3, 9, 27, . . .?

Which of the following is the rule for the geometric sequence 1, 3, 9, 27, . . .?
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1 vote
Which of the following is the rule for the geometric sequence 1, 3, 9, 27, . . .?

Which of the following is the rule for the geometric sequence 1, 3, 9, 27, . . .?-example-1
User Bran Van Der Meer
by
8.0k points

2 Answers

5 votes

Answer:

D

Explanation:

User Nhydock
by
8.1k points
3 votes

Answer:


a(n) = 1 * {3}^(n - 1)

Explanation:

  • We started at 1
  • And it seems that index after index it multiplies by 3
  • The formula for the geometric sequence defined implicitly is a(n) =a(1)r^(n-1)


a(n) = a(1) {r}^(n - 1) \\ a(n) = 1 * {3}^(n - 1)

User Thomas Jiang
by
8.4k points
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