Answer:
p=3
Step-by-step explanation:
p:4=9:12
We can rewrite this to p/4=9/12. This simplifies to 1/4p=3/4. We can multiply both sides of the equation by 4. Then we get p=3.
The easiest way to do this is to reflect Figure I over the Y axis. Then move it up 3 and left 2.
