Pls answer, and quick!! i'll give brainliest

Answer:
see explanation
Step-by-step explanation:
The scale factor is the ratio of corresponding sides, image to original.
A
scale factor = [tex]\frac{3}{9}[/tex] = [tex]\frac{1}{3}[/tex]
B
scale factor = [tex]\frac{9}{3}[/tex] = 3