The fourth term of a sequence is 108. Each term after the first is 3 times the previous term. Write an explicit expression that
models the general term of the sequence f(n). Write your answer in the space provided on your answer document.
1 answer:
Answer:

Step-by-step explanation:
Let the first term be
, then the terms of the sequence are:
.
Since the fourth term is 108, we have


Hence the sequence becomes:
.
The explicit expression for a geometric expression is given by:

where a=4 and r=3
The required formula is:

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Step-by-step explanation:





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Step-by-step explanation:
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Step-by-step explanation: