Question

How do you write an nth term rule for `r=3` and `a_1=4`?

Answer 1

`n^(th)` term `a_n` is `4xx3^(n-1`

Explanation:

If `a_1` is the first term of a geometric sequence and `r` is the common ratio, then the `n^(th)` term `a_n` is given by

`a_n=a_1xxr^(n-1)=4xx3^(n-1`