3 years ago

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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