Plz help... again I just can’t

Answer:
[tex]\frac{1}{6}[/tex]
Step-by-step explanation:
Because we are looking for the scale factor of the model to the bridge (model first), the scale factor will be less than one.
[tex]\frac{5}{30}=\frac{1}{6}[/tex]
[tex]\frac{6}{36} =\frac{1}{6}[/tex]
[tex]\frac{9}{54} =\frac{1}{6}[/tex]
Each fraction ([tex]\frac{model}{bridge}[/tex]) can be simplified to [tex]\frac{1}{6}[/tex]. Therefore, the scale factor of the model to the bridge is [tex]\frac{1}{6}[/tex].