Question

How do you find a20 for the sequence {2, 2.4, 2.88, 3.456....}?

Answer 1

This is a geometric sequence with a common factor r = 1.2

Explanation:

The common ratio can be found by dividing:

`r = 2.4/2=1.2`

Now, to find the 20th term:

`a_20 = (2)(1.2)^(20-1) ~~ 63.896`

hope that helped