Respuesta :
Answer:
[tex]2.5[/tex]
Step-by-step explanation:
we know that
The scale factor is equal to the length side of the resulting image divided by the length side of the original image
so
[tex]scale\ factor=\frac{7.5}{3}=2.5[/tex]
[tex]2.5 > 1[/tex] -----> the scale factor is greater than [tex]1[/tex] (because is an enlargement)