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Answered

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Q3. Here are the first four terms of a sequence: 11, 22, 44, 88...
a) Write down one expression in terms of n for the nth term of the sequence.

Sagot :

Answer: a(n) = 11*2^(n-1)

a1 = 11

a2 = 22 = 11.2

a3 = 44 = 11.2²

a4 = 88 = 11.2³

......

=> this is a geometic with a1 = 11

                                           r = 2

=> [tex]a(n)=11.2^{n-1}[/tex]

Step-by-step explanation:

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