Answer:
x = 13
Step-by-step explanation:
Since the polygons are similar, their side lengths will be proportionate.
So, The ratio (x - 3)/2.5 will be proportionate to 16/4 (4).
That said, we can get that (x - 3)/2.5 = 4
Multiply: x - 3 = 10
Add: x = 13
