SOLUTION: what are the first four terms of sequence whose nth term is given by the formula of an=3n

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Question 1128296: what are the first four terms of sequence whose nth term is given by the formula of an=3n
Answer by KMST(5328) About Me  (Show Source):
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To find the first four terms of the sequence whose n%5Eth term (meaning the term number n) is given by
a%5Bn%5D=3n
we simply substitute the first four counting numbers for n in that formula.
By "counting numbers, I mean 1, 2, 3, ....., and the first four are 1, 2, 3, and 4.
For n=1 , we have
a%5B1%5D=3%2A1=highlight%283%29
For n=2 , we have
a%5B2%5D=3%2A2=highlight%286%29
For n=3 , we have
a%5B3%5D=3%2A3=highlight%289%29
For n=4 , we have
a%5B4%5D=3%2A4=highlight%2812%29