The fourth term of a sequence is 18. The term – to – term rule is : ‘ Subtract 3 then multiply by 3.’ What is the first term of the sequence?

James Alvarez asked Sep 17, 2023

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11 votes

The fourth term of a sequence is 18.

The term – to – term rule is : ‘ Subtract 3 then multiply by 3.’ What is the first term of the sequence?

James Alvarez asked Sep 17, 2023

2.1k points

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24 votes

Answer:

11/3

Explanation:

let the 3rd no be x

(x-3)3 = 18

x-3 = 6

x = 9

keep solving the equation and the first term will be 11/3

Micky answered Sep 20, 2023

by Micky

2.8k points

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