What is the closed form for an=3an−1a_n = 3a_{n-1}an=3an−1 with a0=5a_0 = 5a0=5?
an=5⋅3na_n = 5 \cdot 3^nan=5⋅3n
an=5+3na_n = 5 + 3nan=5+3n
an=3n+5a_n = 3n + 5an=3n+5
an=3⋅5na_n = 3 \cdot 5^nan=3⋅5n