Simplify. Express your answer using positive exponents.

Answer:
[tex]m^9[/tex]
Step-by-step explanation:
[tex]\frac{m^0m^{-1}m^3}{m^{-7}}[/tex]
[tex]m^0m^{-1}m^3=m^2[/tex]
[tex]\frac{m^2}{m^{-7}}[/tex]
[tex]m^9[/tex]