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Viefleur [7K]
3 years ago
6

Write an explicit rule for the geometric sequence 4, 8, 16, 32, ..

Mathematics
2 answers:
Alina [70]3 years ago
8 0
8÷4=2
16÷8=2
32÷16=2
multiply by 2
Paul [167]3 years ago
5 0
First term:  a(1) = 4; common ratio:  r = 2

Then:

a(n) = 4(2)^(n-1)

Check:  Predict the 4th term using this formula:

a(4) = 4(2)^3 = 4(8) = 32  (correct)
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