Question 968004: Oh my goodness, I'm really struggling with this one. Can anyone help me?
Consider the following sequence:
3, 12, 48, 192...
a. Write a recursive formula for the nth term of the sequence
b. Write a general formula for the nth term of the sequence c. Calculate S10 for this sequence
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Consider the following sequence:
3, 12, 48, 192...
a. Write a recursive formula for the nth term of the sequence
Ans: a(n+1) = 4*a(n)
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b. Write a general formula for the nth term of the sequence
a(n) = 3*4^(n-1)
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c. Calculate S10 for this sequence
Geometric sequence with a(1) = 3 and r = 4
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S(10) = a(1)*r^(n-1) = 3*4^9 = 786432
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Cheers,
Stan H.
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