Answer:
15 + n
Step-by-step explanation:
Since 'a number' is represented as n, we need to have n and 15.
Next, the problem says 15 more than a number, so the sign needs to show addition.
Then, we put it together, giving us 15 + n, or n + 15.
I hope this helps :) if so, brainliest would help me out a lot <3