Answer:
2
Step-by-step explanation:
Initial photo:
The photo is 2.5 inches by 3.5 inches.
Dilated photo:
You dilate the photo to 5 inches by 7 inches.
If two figures are similar, then you can relate different characteristics of the figure by using the scale factor. The scale factor is the ratio of the length of a side of one figure to the length of the side of another figure.
Scale factor:
[tex]\dfrac{5}{2.5}=\dfrac{7}{3.5}=2[/tex]
