Answer:
It's the last one (-3m^-3n)
Step-by-step explanation: You can take this equation and divide it up into parts. To make this simple, make it...
-9/3 × m/m^4 × n²/n
m/m^4 is basically [tex]m^{1-4}[/tex], which ends up being m^-3.
n²/n is basically [tex]n^{2-1}[/tex] which ends up being n^1, or just n.
Then simplify all parts of the equation so you are left with:
-3 × m^-3 × n
You are then left with the bottom answer.
