SOLUTION: 4. A sequence is formed by multiplying each term by 3 and adding 3 to get the next term. If the fifth term is 39, what is the value of the first term?

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Question 839007: 4. A sequence is formed by multiplying each term by 3 and adding 3 to get the next term. If
the fifth term is 39, what is the value of the first term?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

 A sequence is formed by multiplying each term by 3 and adding 3 to get the next term. 

If the fifth term is 39, what is the value of the first term? 

Working backwards:

a%5B5%5D+=+3%2Aa%5B4%5D+%2B+3+=+39, a%5B4%5D+=+12

a%5B4%5D+=+3%2Aa%5B3%5D+%2B+3+=+12, a%5B3%5D+=+3

a%5B3%5D+=+3%2Aa%5B2%5D+%2B+3+=+3, a%5B2%5D+=+0

a%5B2%5D+=+3%2Aa%5B1%5D+%2B+3+=+0, a%5B1%5D+=+highlight%28-1%29

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