For an=3an−1a_n = 3a_{n-1}an=3an−1, what is the relation between ana_nan and a0a_0a0?
an=a0⋅3na_n = a_0 \cdot 3^nan=a0⋅3n
an=a0+3na_n = a_0 + 3^nan=a0+3n
an=a0⋅3a_n = a_0 \cdot 3an=a0⋅3
an=a0+3na_n = a_0 + 3nan=a0+3n