Answer:
Rosie now has c+3 charms
Step-by-step explanation:
We are given that the original number of charms that Rosie has is c
We know that Ray gave Rosie 3 new charms
This means that the number of charms that Rosie originally had increased by 3
To express this increase, we use addition where we add 3 to the original number of charms that she had
New number of charms = original number of charms + 3
New number of charms = c + 3
Hope this helps :)