Kpop4life123 one year ago I WILL FAN AND MEDAL!!!!!!!!!!!! Which expression is equivalent to 3^4 ⋅ 3–^9?

$$\bf \large { a^n\cdot a^m\implies a^{n+m}\qquad thus \\ \quad \\ 3^4\cdot 3^{-9}\implies 3^{4-9} }$$