Question

What is the nth term of the geometric sequence 4, 8, 16, 32, ... ?

Answer 1

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Answer 2

In this sequence, each term is being multiplied by 2, so r is 2

Answer 3

an=2(4) ^n-1?

Answer 4

Close, you just mixed up 2 and 4. 4 is a1 and 2 is r

Answer 5

an=4(2)^n-1

Answer 6

perfect. you can test it too by plugging in n's and seeing if they match up

Answer 7

Thank you!