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

${n}^{t h}$ term ${a}_{n}$ is 4xx3^(n-1
If ${a}_{1}$ is the first term of a geometric sequence and $r$ is the common ratio, then the ${n}^{t h}$ term ${a}_{n}$ is given by
a_n=a_1xxr^(n-1)=4xx3^(n-1