Answer:
3
Step-by-step explanation:
Dilating a shape will proportionately affect its side lengths.
To find the scale factor between the given triangles, take one side on the larger triangle and divide it by the corresponding side on the smaller triangle. I will divide the triangles' top sides (24 and 8).
[tex]\textrm{scale factor} = \dfrac{24}{8} = 3[/tex]
So, the scale factor used was 3.
